Instead of mapping invaid glyphIDs to zero or maxGlyphID,
don't draw them at all.
Validate glyphs when glyph is written, not ahead of time.
Don't allocate array to copy user-provided glyphs.
Easy early exit from SkPDFDevice::internalDrawText()
GlyphPositioner::flush() called ~GlyphPositioner()
SkScopeExit class now exists.
Assume SkTypeface* pointers are now never null in more
places.
precalculate alignmentFactor to clean up code.
SkPDFDevice::updateFont must be called with validated
glyphID. Skip bad glyphs to make this true.
SkPDFDevice::updateFont always succeeds.
SkPDFFont::GetFontResource always succeeds (preconditions are
asserted). If GetMetrics fails, don't call GetFontResource.
SkPDFFont::glyphsToPDFFontEncodingCount() becomes
SkPDFFont::countStretch() and is inlined.
SkPDFFont::glyphsToPDFFontEncoding now works one Glyph at a
time and is inlined.
SkPDFFont::noteGlyphUsage() operates one glyph at a time.
Add SkScopeExit.h; also a unit test for it.
SkPostConfig: Fix SK_UNUSED for Win32.
No public API changes.
TBR=reed@google.com
BUG=625995
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2278703002
Review-Url: https://codereview.chromium.org/2278703002
4871f22777