[Snowflake] Add presubmit checks to color resources in chrome/android

+ Check all color references are from colors.xml
+ Check only unique RGB values are defined in colors.xml
+ Restrict format of RGB value when defining color resources.

Bug: 775198
Change-Id: I6a82ff389c87f08b4866dc0557294e447d0c44e3
Reviewed-on: https://chromium-review.googlesource.com/775434
Reviewed-by: John Budorick <jbudorick@chromium.org>
Reviewed-by: Theresa <twellington@chromium.org>
Commit-Queue: Becky Zhou <huayinz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#518092}

CrOS-Libchrome-Original-Commit: f8c0563a7790aa97a0a89c1fb26cf387b12decb8
1 file changed
tree: 9a4a6ea4ec5660490a34f4596c01a203d6e08245
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/