SkTypes.h was found exporting <stddef.h> and <stdint.h>.
Thus if a Skia file includes SkTypes.h, it did not need
to include either of those files to use things like
size_t or uint8_t respectively. [1]
This also resulted in strange IWYU warnings like:
warning: size_t is defined in "include/core/SkTypes.h", which isn't directly #included.
Thus, this CL removes those additional exports, and as a result,
adds many more includes of <cstddef> and <cstdint>.
The second change this CL is to not use the default IWYU
mappings which are hard-coded into IWYU [2]. These defaults
are valid, but make suggestions for the C version of
headers and not the C++ ones (i.e. <stddef.h> over <cstddef>).
To make these recommendations align better with our preferred
style (the C++ ones), we use IWYU with --no_default_mappings
and then have to expand our existing mappings to better deal
with how IWYU would resolve some of these headers.
[1] https://codereview.chromium.org/1207893002/#msg49
[2] 4c0f396159/iwyu_include_picker.cc (L1221-L1234)
Change-Id: Iafebe190f8f3e86f252147b9f538c182bcc34af4
Bug: skia:13052
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/555516
Auto-Submit: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
68d6ff9222