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, 7 insertions, 0 deletions

diff --git a/cc/animation/layer_animation_controller.cc b/cc/animation/layer_animation_controller.cc
index daebc44..f720229 100644
--- a/cc/animation/layer_animation_controller.cc
+++ b/cc/animation/layer_animation_controller.cc
@@ -187,6 +187,8 @@ void LayerAnimationController::AccumulatePropertyUpdates(
         break;
       }
 
+      case Animation::BackgroundColor: { break; }
+
       case Animation::TargetPropertyEnumSize:
         NOTREACHED();
     }
@@ -710,6 +712,11 @@ void LayerAnimationController::TickAnimations(double monotonic_time) {
           break;
         }
 
+        case Animation::BackgroundColor: {
+          // Not yet implemented.
+          break;
+        }
+
         // Do nothing for sentinel value.
         case Animation::TargetPropertyEnumSize:
           NOTREACHED();