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SkBitmap used as a source for icon bitmaps generation may have color components premultiplied by alpha value. In that case utilizing SkBitmap pixels as is makes them appear darker in resulting icon where no premultiplication is expected.

With this CL premultiplied alpha pixels are converted to pixels where colors components are independent from alpha channel if required.

Bug: 1090720
Change-Id: Idfc34fe66fbd6d4ed1a44332c59b0f9bd6d9fc84
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2345144Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#799266}