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This is a reland of 85ae69b0. Fixes
namespace conflict with branded builds. Verified by local compile.

Original change's description:
> Add new class ColorTrackingIconView to deduplicate subclasses.
>
> Upon investigating the associated bug, I noticed that there are a few
> subclasses of ImageView that exist solely to override OnThemeChanged.
> Since I also needed a subclass like this to fix the bug, I decided to
> make a utility class to eliminate this ad-hoc subclassing, in the style
> of ColorTrackingVectorImageButton (in image_button_factory.cc).
>
> Bug: 1125510
> Change-Id: I975a9b6a4676bb6b2a454172f211f406934d7869
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2397737
> Commit-Queue: Bret Sepulveda <bsep@chromium.org>
> Reviewed-by: Trent Apted <tapted@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#804901}

Bug: 1125510
Change-Id: Icbe7240ab8159f1c61f510f03dab7e5d6c5d563b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2401018
Commit-Queue: Bret Sepulveda <bsep@chromium.org>
Auto-Submit: Bret Sepulveda <bsep@chromium.org>
Reviewed-by: Trent Apted <tapted@chromium.org>
Cr-Commit-Position: refs/heads/master@{#805751}