GitLab

Extract all the low-level skia/gfx/color_util stuff as
ResizeIconsAndGenerateMissing function.

This is a cut-and-paste CL, no behavior changes.

Notes:
- WebApplicationInfo::IconInfo becomes IconInfo. TODO for next CL:
Merge IconInfo and BitmapAndSource - they are essentially the same.

- BookmarkAppHelperExtensionServiceTest.LinkedAppIconsAreNotChanged test
was always broken (a bug in ValidateAllIconsWithURLsArePresent helper)
https://codereview.chromium.org/1066623008/patch/80001/90005

This is a re-land of:
https://chromium-review.googlesource.com/c/chromium/src/+/1166751
MSan issue solved, ouput parameters initialized everywhere:
SkColor generated_icon_color = SK_ColorTRANSPARENT;

TBR=ortuno@chromium.org

Bug: 860581
Change-Id: Ib26c765083e67e3a1c938a49994a5f5d5ecc8265
Reviewed-on: https://chromium-review.googlesource.com/1170665
Commit-Queue: Alexey Baskakov <loyso@chromium.org>
Reviewed-by: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Reviewed-by: Dominick Ng <dominickn@chromium.org>
Cr-Commit-Position: refs/heads/master@{#582491}