Commit Graph

1398 Commits

Author SHA1 Message Date
msarett
5cb4885b4c Rename SkBitmapRegionDecoder and Create function
We no longer need to worry about namespace
conflicts SkBitmapRegionDecoder in Android (which
we are replacing).

Additionally, the static Create() function does not
need to repeat the name BitmapRegionDecoder.

BUG=skia:

Review URL: https://codereview.chromium.org/1415243007
2015-11-06 08:56:32 -08:00
msarett
fcff08c830 SkBitmapRegionCodec needs to use the rowBytes on the pixel ref
BUG=skia:4538

Review URL: https://codereview.chromium.org/1422023006
2015-11-05 15:00:56 -08:00
halcanary
6aff54c322 tools/git-sync-deps: speed up common case by skipping fetch
Review URL: https://codereview.chromium.org/1431713002
2015-11-03 09:50:03 -08:00
mtklein
f27f08b76d DM+VB: WallTimer -> SkTime::GetNSecs().
The same timer with a simpler interface.

BUG=skia:

Review URL: https://codereview.chromium.org/1427033003
2015-11-03 06:54:24 -08:00
iroth
8b99ef4347 Enable building Skia for iOS with bazel.
BUG=skia:

Review URL: https://codereview.chromium.org/1429863002
2015-11-02 11:11:21 -08:00
benjaminwagner
9dbec09251 In BUILD.public, specify alwayslink for skia library.
Some Skia classes use SkTRegistry, which requires the source files be linked in order to be registered.

Also replace "*CG*" with "SkImageDecoder_CG.cpp" for clarity.

BUG=skia:

Review URL: https://codereview.chromium.org/1405023013
2015-11-02 05:53:39 -08:00
caryclark
ef784fb7f5 More conic-specific tests revealed a few conic-specific bugs. Because javascript / canvas make visualizing conics tricky, new native tools are required.
The utility SubsetPath removes parts of a potentially very large path to isolate a minimal test case. SubsetPath is very useful for debugging path ops, but is not path ops specific.

PathOpsBuilderConicTest compares the output of the Path Ops Builder, sequential calls to Simplify, and SkRegions for some number of rotated ovals.

Some tests caused path ops to hang. It was caught adding a loop of curves because the head was not found by the tail. Even though the root cause has been fixed, SkSegment::addCurveTo callers now abort the path op if the same curve was added twice.

The subdivided conic weight was been computed anew. Fortunately, it's a simpler computation that the one it replaces.

Some Simplify() subroutines returned false to signal that the results needed assembling. Change these to abort the current operation instead.

Coincident curve intersection triggered two small bugs; one where no perpendicular could be found for coincident curves, and one where no coincident curves remain after looping.

The SixtyOvals test can be run through multiple processes instead of multiple threads. This strategy allows a 48 core machine to saturate all cores at 100%.

The DEBUG_VISUALIZE_CONICS code in PathOpsConicIntersectionTest acknowleges that it is easier to visualize conics with Skia than with script and html canvas. This test also verifies that path ops subdivision matches geometry chopping.

TBR=reed@google.com

Review URL: https://codereview.chromium.org/1405383004
2015-10-30 12:03:06 -07:00
bsalomon
f93982a477 Don't run nvpr on TSAN bot
Review URL: https://codereview.chromium.org/1405223006
2015-10-30 09:05:32 -07:00
benjaminwagner
8a3760f8b2 For BUILD.public, let SkPreConfig.h set SK_RELEASE based on NDEBUG.
Use DumpStackTrace in SkASSERT in GOOGLE3.

There are extra assertions enabled in debug mode that cause RecordDraw_TextBounds to fail.

New include causes a naming conflict with global name "base".

Corresponding internal cl/106495354

No public API changes.

TBR=reed@google.com
BUG=skia:

Review URL: https://codereview.chromium.org/1423013004
2015-10-29 13:40:28 -07:00
msarett
c37799282f Make DMSrcSink fail fatally when decodeRegion() fails for BRDSrcs
This involves disabling webps for kCanvas_Strategy.
We have not yet implemented webp subset decodes for this
strategy.

BUG=skia:4521

Review URL: https://codereview.chromium.org/1405273004
2015-10-27 13:28:25 -07:00
msarett
3f65e93b19 Add NewFromStream and getEncodedFormat to BitmapRegionDecoder
The function will be needed in Android.

BUG=skia:

Review URL: https://codereview.chromium.org/1425833002
2015-10-27 13:12:59 -07:00
msarett
35e5d1b449 Refactor SkBitmapRegionDecoderInterface for Android
The result SkBitmap, the pixel allocator, and the alpha
preference need to be communicated from the client to
the region decoder.

BUG=skia:

Review URL: https://codereview.chromium.org/1418093006
2015-10-27 12:50:25 -07:00
cdalton
e6d2024c68 Flush GrContext between benchmark draw loops
This change updates a small subset of benchmarks to flush the GrContext
between draw loops (specifically SKP benchmarks, SampleApp, and the
warmup in visualbench). This helps improve timing accuracy by not
allowing the gpu to batch across draw boundaries in the affected
benchmarks.

BUG=skia:

Review URL: https://codereview.chromium.org/1427533002
2015-10-26 13:45:29 -07:00
cdalton
c70483f5ab Add visualbench option for device-independent fonts
BUG=skia:

Review URL: https://codereview.chromium.org/1421723004
2015-10-26 13:14:36 -07:00
benjaminwagner
86ea33e963 Enable BUILD file compilation of skia and dm with --config=android_arm.
Corresponding google3 cl is 105687529.

BUG=skia:

Review URL: https://codereview.chromium.org/1414643002
2015-10-26 10:46:25 -07:00
mtklein
33eefcd58b SkTime::GetNSecs()
- Move high-precision wall timers from tools/timer to SkTime.
   - Implement SkTime::GetMSecs() in terms of SkTime::GetNSecs().
   - Delete unused tools/timer code.

I have no idea what's going on there in src/animator.
I don't intend to investigate.

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/70084cbc16ee8162649f2601377feb6e49de0217

CQ_EXTRA_TRYBOTS=client.skia.compile:Build-Ubuntu-GCC-x86_64-Debug-CrOS_Link-Trybot

Committed: https://skia.googlesource.com/skia/+/a1840d50e29fd95e4df2d1168fe54c34c2a5c30c

Committed: https://skia.googlesource.com/skia/+/38a88e4c0c28a7be981aac7bb4a198ad95a62a63

Review URL: https://codereview.chromium.org/1422513003
2015-10-23 07:02:06 -07:00
mtklein
3b5b784542 Revert of SkTime::GetNSecs() (patchset #11 id:200001 of https://codereview.chromium.org/1422513003/ )
Reason for revert:
Times don't look like they make sense on Windows.

Original issue's description:
> SkTime::GetNSecs()
>
>    - Move high-precision wall timers from tools/timer to SkTime.
>    - Implement SkTime::GetMSecs() in terms of SkTime::GetNSecs().
>    - Delete unused tools/timer code.
>
> I have no idea what's going on there in src/animator.
> I don't intend to investigate.
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/70084cbc16ee8162649f2601377feb6e49de0217
>
> CQ_EXTRA_TRYBOTS=client.skia.compile:Build-Ubuntu-GCC-x86_64-Debug-CrOS_Link-Trybot
>
> Committed: https://skia.googlesource.com/skia/+/a1840d50e29fd95e4df2d1168fe54c34c2a5c30c
>
> Committed: https://skia.googlesource.com/skia/+/38a88e4c0c28a7be981aac7bb4a198ad95a62a63

TBR=caryclark@google.com,reed@google.com,mtklein@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1422623003
2015-10-23 06:40:33 -07:00
mtklein
38a88e4c0c SkTime::GetNSecs()
- Move high-precision wall timers from tools/timer to SkTime.
   - Implement SkTime::GetMSecs() in terms of SkTime::GetNSecs().
   - Delete unused tools/timer code.

I have no idea what's going on there in src/animator.
I don't intend to investigate.

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/70084cbc16ee8162649f2601377feb6e49de0217

CQ_EXTRA_TRYBOTS=client.skia.compile:Build-Ubuntu-GCC-x86_64-Debug-CrOS_Link-Trybot

Committed: https://skia.googlesource.com/skia/+/a1840d50e29fd95e4df2d1168fe54c34c2a5c30c

Review URL: https://codereview.chromium.org/1422513003
2015-10-23 06:24:07 -07:00
mtklein
5a06df4686 Revert of SkTime::GetNSecs() (patchset #10 id:180001 of https://codereview.chromium.org/1422513003/ )
Reason for revert:
https://codereview.chromium.org/1412453006

Original issue's description:
> SkTime::GetNSecs()
>
>    - Move high-precision wall timers from tools/timer to SkTime.
>    - Implement SkTime::GetMSecs() in terms of SkTime::GetNSecs().
>    - Delete unused tools/timer code.
>
> I have no idea what's going on there in src/animator.
> I don't intend to investigate.
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/70084cbc16ee8162649f2601377feb6e49de0217
>
> CQ_EXTRA_TRYBOTS=client.skia.compile:Build-Ubuntu-GCC-x86_64-Debug-CrOS_Link-Trybot
>
> Committed: https://skia.googlesource.com/skia/+/a1840d50e29fd95e4df2d1168fe54c34c2a5c30c

TBR=caryclark@google.com,reed@google.com,mtklein@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1417753003
2015-10-22 17:49:22 -07:00
mtklein
a1840d50e2 SkTime::GetNSecs()
- Move high-precision wall timers from tools/timer to SkTime.
   - Implement SkTime::GetMSecs() in terms of SkTime::GetNSecs().
   - Delete unused tools/timer code.

I have no idea what's going on there in src/animator.
I don't intend to investigate.

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/70084cbc16ee8162649f2601377feb6e49de0217

CQ_EXTRA_TRYBOTS=client.skia.compile:Build-Ubuntu-GCC-x86_64-Debug-CrOS_Link-Trybot

Review URL: https://codereview.chromium.org/1422513003
2015-10-22 13:33:22 -07:00
caryclark
6ae30fbbaf Revert of SkTime::GetNSecs() (patchset #9 id:160001 of https://codereview.chromium.org/1422513003/ )
Reason for revert:
broke chromeos

Original issue's description:
> SkTime::GetNSecs()
>
>    - Move high-precision wall timers from tools/timer to SkTime.
>    - Implement SkTime::GetMSecs() in terms of SkTime::GetNSecs().
>    - Delete unused tools/timer code.
>
> I have no idea what's going on there in src/animator.
> I don't intend to investigate.
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/70084cbc16ee8162649f2601377feb6e49de0217

TBR=reed@google.com,mtklein@google.com,mtklein@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1420923003
2015-10-22 13:03:02 -07:00
mtklein
70084cbc16 SkTime::GetNSecs()
- Move high-precision wall timers from tools/timer to SkTime.
   - Implement SkTime::GetMSecs() in terms of SkTime::GetNSecs().
   - Delete unused tools/timer code.

I have no idea what's going on there in src/animator.
I don't intend to investigate.

BUG=skia:

Review URL: https://codereview.chromium.org/1422513003
2015-10-22 12:47:04 -07:00
msarett
26ad17b8f8 Implementation of SkBitmapRegionDecoder using SkAndroidCodec
Includes testing in DM and nanobench

BUG=skia:

Review URL: https://codereview.chromium.org/1402863002
2015-10-22 07:29:19 -07:00
caryclark
ed0935a28a Reland of path ops: fix conic weight and partial coincidence (patchset #1 id:1 of https://codereview.chromium.org/1408923003/ )
Reason for revert:
suppressions have landed in chrome

Original issue's description:
> Revert of path ops: fix conic weight and partial coincidence (patchset #5 id:80001 of https://codereview.chromium.org/1413763002/ )
>
> Reason for revert:
> path ops change breaks svg clipping layout tests -- conic is now more accurate, changing edge of circle in clip
>
> These need to be rebaselined
>
> svg/clip-path/clip-path-child-clipped.svg
> svg/clip-path/clip-path-nonzero.svg
> svg/clip-path/clip-path-evenodd-nonzero.svg
> svg/clip-path/clip-path-nonzero-evenodd.svg
>
> Original issue's description:
> > The remaining 1m skp bugs are asserts that can be harmlessly
> > suppressed and bugs around conics.
> >
> > The conic calculation for a subdivided w was just wrong.
> >
> > Also added debugging to template intersection to initialize
> > reused structures and dump additional data.
> >
> > TBR=reed@google.com
> >
> > Committed: https://skia.googlesource.com/skia/+/ef33b1e739b23a1201100ff17a572da85b03d9af
>
> TBR=
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
>
> Committed: https://skia.googlesource.com/skia/+/f428df1be3e96d3f8970d0f7f415b862f7da5404

TBR=
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1407003016
2015-10-22 07:23:52 -07:00
scroggo
7f53819ea9 Revert of Suppression for valgrind bug (patchset #1 id:1 of https://codereview.chromium.org/1410953002/ )
Reason for revert:
We believe this was suppressing an out of date error that was being triggered because the valgrind bot was not rebuilding nanobench. The valgrind bot has been fixed (is there a bug tracking that?), so this suppression is probably not necessary.

Original issue's description:
> Suppression for valgrind bug
>
> TBR=msarett@google.com
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
>
> BUG=skia:4478
>
> Committed: https://skia.googlesource.com/skia/+/82e341ff8764ef6168a0c9322089c391d657ae7f

TBR=msarett@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:4478

Review URL: https://codereview.chromium.org/1406333006
2015-10-22 07:23:21 -07:00
borenet
5eaaad29dd Stop running nanobench on GalaxyS4
BUG=skia:3214

Review URL: https://codereview.chromium.org/1422683002
2015-10-22 07:06:28 -07:00
joshualitt
fb02cdafda Force VisualBench to reset GLContext on GrContext reset
BUG=skia:

Review URL: https://codereview.chromium.org/1416063002
2015-10-21 08:04:24 -07:00
borenet
b64b195dbd Fix build targets for some bots
Valgrind bot is not building nanobench. Some bots are building nanobench and then not running it.

BUG=skia:

Review URL: https://codereview.chromium.org/1412243004
2015-10-21 07:50:58 -07:00
caryclark
f428df1be3 Revert of path ops: fix conic weight and partial coincidence (patchset #5 id:80001 of https://codereview.chromium.org/1413763002/ )
Reason for revert:
path ops change breaks svg clipping layout tests -- conic is now more accurate, changing edge of circle in clip

These need to be rebaselined

svg/clip-path/clip-path-child-clipped.svg
svg/clip-path/clip-path-nonzero.svg
svg/clip-path/clip-path-evenodd-nonzero.svg
svg/clip-path/clip-path-nonzero-evenodd.svg

Original issue's description:
> The remaining 1m skp bugs are asserts that can be harmlessly
> suppressed and bugs around conics.
>
> The conic calculation for a subdivided w was just wrong.
>
> Also added debugging to template intersection to initialize
> reused structures and dump additional data.
>
> TBR=reed@google.com
>
> Committed: https://skia.googlesource.com/skia/+/ef33b1e739b23a1201100ff17a572da85b03d9af

TBR=
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1408923003
2015-10-21 04:02:51 -07:00
mtklein
0c768a2f33 Clean up some dead code.
This cleans up tools/ code, or code that should have been in tools/.

The only interesting code change trims features off of PictureRenderer.
It's still in use by a few useful-looking tools.

BUG=skia:

Review URL: https://codereview.chromium.org/1416913003
2015-10-20 14:29:10 -07:00
caryclark
ef33b1e739 The remaining 1m skp bugs are asserts that can be harmlessly
suppressed and bugs around conics.

The conic calculation for a subdivided w was just wrong.

Also added debugging to template intersection to initialize
reused structures and dump additional data.

TBR=reed@google.com

Review URL: https://codereview.chromium.org/1413763002
2015-10-20 13:42:25 -07:00
benjaminwagner
964eebae2d Include resources directory in google3 sync.
Also other minor improvements in sync scripts.

In BUILD.public, include all files under resources as data dependencies for DM. Omit newly failing DM tests and add newly passing DM tests.

Adds the OpenClipart "license" to LICENSE per comment in google3 CL 100158380.

Corresponding google3 CL is 105602927.

BUG=skia:

Review URL: https://codereview.chromium.org/1406283002
2015-10-20 13:00:48 -07:00
robertphillips
423f6461e9 Add SkTTopoSort
BUG=skia:4094

Review URL: https://codereview.chromium.org/1414503003
2015-10-19 12:15:55 -07:00
bsalomon
2f8ac3538d Misc: Don't run etc1 bench with invalid image and fix VS2015 build warning
Review URL: https://codereview.chromium.org/1409993003
2015-10-19 08:29:16 -07:00
robertphillips
9c4909b50f Add imgblur tool to assist BlurMaskFilter debugging
imgblur is intended to establish a ground truth for debugging mask blur issues. It performs a brute force (non-separable) Gaussian blur of the provided image.

The blur code itself is in sk_tools_utils so it can be more easily used programmatically in other places (e.g., blur unit tests).

Review URL: https://codereview.chromium.org/1384203002
2015-10-19 06:39:17 -07:00
mtklein
ff8b3f0f65 Test SkRemote on GCE bots.
This will get us gathering GM images.
I will set up ignores on gold.skia.org so no one's bothered.

BUG=skia:

Review URL: https://codereview.chromium.org/1414563002
2015-10-17 09:25:21 -07:00
scroggo
82e341ff87 Suppression for valgrind bug
TBR=msarett@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

BUG=skia:4478

Review URL: https://codereview.chromium.org/1410953002
2015-10-16 14:42:47 -07:00
caryclark
26ad22ab61 Enabling clip stack flattening exercises path ops.
Iterating through the 903K skps that represent the
imagable 1M top web pages triggers a number of
bugs, some of which are addressed here.

Some web pages trigger intersecting cubic
representations of arc with their conic
counterparts. This exposed a flaw in coincident
detection that caused an infinite loop. The loop
alternatively extended the coincident section and,
determining the that the bounds of the curve pairs
did not overlap, deleted the extension.

Track the number of times the coincident detection
is called, and if it exceeds an empirically found
limit, assume that the curves are coincident and
force it to be so.

The loop count limit can be determined by enabling
DEBUG_T_SECT_LOOP_COUNT and running all tests. The
largest count is reported on completion.

Another class of bugs was caused by concident
detection duplicating nearly identical points that
had been merged earlier. To track these bugs, the
'handle coincidence' code was duplicated as a
const debug variety that reported if one of a
dozen or so irregularities are present; then it is
easier to see when a block of code that fixes one
irregularity regresses another.

Creating the debug const code version exposed some
non-debug code that could be const, and some that
was experimental and could be removed. Set
DEBUG_COINCIDENCE to track coincidence health and
handling.

For running on Chrome, DEBUG_VERIFY checks the
result of pathops against the same operation
using SkRegion to verify that the results are
nearly the same.

When visualizing the pathops work using
tools/pathops_visualizer.htm, set
DEBUG_DUMP_ALIGNMENT to see the curves after
they've been aligned for coincidence.

Other bugs fixed include detecting when a
section of a pair of curves have devolved into
lines and are coincident.

TBR=reed@google.com

Review URL: https://codereview.chromium.org/1394503003
2015-10-16 09:03:38 -07:00
joshualitt
c9dd93cd5b Add NVPR to VisualBench
BUG=skia:

Review URL: https://codereview.chromium.org/1409603004
2015-10-15 09:49:31 -07:00
benjaminwagner
6f6bef84a3 Add dm target to BUILD and refactor BUILD file. The corresponding google3 BUILD file changes are in google3 cl/105413829.
Fix blaze compilation errors. The default compilation options for blaze require that the initialization list must list fields in initialization order. Also deal with differing versions of libjpeg.

The BUILD changes were started by melanielc in google3 cl/102860957.

BUG=skia:

Review URL: https://codereview.chromium.org/1401883005
2015-10-15 08:09:45 -07:00
scroggo
860e8a6719 Renable image benchmarking
- Remove --images '' to renable image benchmarking
- Add a flag to disable testing JPEG's buildTileIndex, since it also leaks memory
- Do not run images on GPU
- Do not run large interlaced images on 32 bit bots
- When buildTileIndex is not being used in the subset benches, do not use it for BRD

BUG=skia:3418
BUG=skia:4469
BUG=skia:4471
BUG=skia:4360

Review URL: https://codereview.chromium.org/1396113002
2015-10-15 07:51:28 -07:00
joshualitt
c603c143bb small tidy of benchmarkstream
BUG=skia:

Committed: https://skia.googlesource.com/skia/+/691b6af907e55250a29a7a2a346b63c2026011c3

Review URL: https://codereview.chromium.org/1395703002
2015-10-15 07:18:29 -07:00
joshualitt
a3b8c67ea6 Revert of small tidy of benchmarkstream (patchset #2 id:20001 of https://codereview.chromium.org/1395703002/ )
Reason for revert:
Breaks visualbench

Original issue's description:
> small tidy of benchmarkstream
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/691b6af907e55250a29a7a2a346b63c2026011c3

TBR=robertphillips@google.com,joshualitt@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1392833006
2015-10-14 14:45:07 -07:00
joshualitt
691b6af907 small tidy of benchmarkstream
BUG=skia:

Review URL: https://codereview.chromium.org/1395703002
2015-10-14 08:04:22 -07:00
joshualitt
d0f0bceb0e Create VisualStreamTimingModule
BUG=skia:

Review URL: https://codereview.chromium.org/1385073002
2015-10-14 07:49:28 -07:00
msarett
ea03aed9c5 SkBitmapRegionCanvas bug fix
BUG=skia:

Review URL: https://codereview.chromium.org/1393423004
2015-10-12 13:33:18 -07:00
msarett
04965c6f11 SkBitmapRegionDecoder clean-up
Use SkCodecPrintf instead of SkDebugf.

Check if the conversion is possible rather than starting many decodes
that will certainly fail.

Small refactor to code that deals with subsets that fall outside
of the image.

BUG=skia:

Review URL: https://codereview.chromium.org/1395383002
2015-10-12 10:24:38 -07:00
bsalomon
f276ac5c16 Move functions from SkGr to SkGrPriv.h
Review URL: https://codereview.chromium.org/1397123002
2015-10-09 13:36:42 -07:00
scroggo
e361781bf7 Fix codec memory leaks in nanobench
SubsetTranslateBench.cpp:
Unref the color table, so it gets deleted.

SkBitmapRegionDecoderInterface.cpp:
Delete the stream if it is not used.

BUG=skia:3418

Review URL: https://codereview.chromium.org/1396113003
2015-10-09 12:15:57 -07:00
msarett
e6dd004c1b Fill incomplete images in SkCodec parent class
Rather than implementing some sort of "fill" in every
SkCodec subclass for incomplete images, let's make the
parent class handle this situation.

This includes an API change to SkCodec.h

SkCodec::getScanlines() now returns the number of lines it
read successfully, rather than an SkCodec::Result enum.
getScanlines() most often fails on an incomplete input, in
which case it is useful to know how many lines were
successfully decoded - this provides more information than
kIncomplete vs kSuccess.  We do lose information when the
API is used improperly, as we are no longer able to return
kInvalidParameter or kScanlineNotStarted.

Known Issues:
Does not work for incomplete fFrameIsSubset gifs.
Does not work for incomplete icos.

BUG=skia:

Review URL: https://codereview.chromium.org/1332053002
2015-10-09 11:07:34 -07:00