Add Color animation curves.

Implement animation curves for colors.

This is the first step towards accelerating background-color animations.

+ Add ColorValueBetween to gfx::Tween.
+ Add test/color_utils which gives EXPECT_COLOR_EQ to check SkColors and
  print in a sane format.
~ Fixed discrepancy between two methods of interpolating ints.
~ Factored out GetProgress into template function to simplify code in
  the implementations of GetValue(double), there was a lot of duplication
  there.

TESTED:
  Added tests for the new KeyframedColorAnimations and AnimatedColor classes. Added tests to tweening.

R=ajuma
BUG=290234

Review URL: https://codereview.chromium.org/25901002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230856 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 1 insertions, 0 deletions

diff --git a/cc/animation/animation.h b/cc/animation/animation.h
index 9946298..f640318 100644
--- a/cc/animation/animation.h
+++ b/cc/animation/animation.h
@@ -47,6 +47,7 @@ class CC_EXPORT Animation {
     Transform = 0,
     Opacity,
     Filter,
+    BackgroundColor,
     // This sentinel must be last.
     TargetPropertyEnumSize
   };