Allows observers to be notified when layer animations complete.

ui/gfx/compositor/layer_unittest.cc

Index: ui/gfx/compositor/layer_unittest.cc
diff --git a/ui/gfx/compositor/layer_unittest.cc b/ui/gfx/compositor/layer_unittest.cc
index eb66d63b33e4395a2116f6cf71dd138c13b10174..636a57a4eaa3a9683f4a2cd457534c21d2d9ac7c 100644
--- a/ui/gfx/compositor/layer_unittest.cc
+++ b/ui/gfx/compositor/layer_unittest.cc
@@ -42,10 +42,6 @@ class ColoredLayer : public Layer, public LayerDelegate {
     canvas->GetSkCanvas()->drawColor(color_);
   }
 
-  virtual void OnLayerAnimationEnded(
-      const LayerAnimationSequence* animation) OVERRIDE {
-  }
-
  private:
   SkColor color_;
 };
@@ -134,9 +130,6 @@ class TestLayerDelegate : public LayerDelegate {
                         contents.height());
     color_index_ = (color_index_ + 1) % static_cast<int>(colors_.size());
   }
-  virtual void OnLayerAnimationEnded(
-      const LayerAnimationSequence* animation) OVERRIDE {
-  }
 
  private:
   std::vector<SkColor> colors_;
@@ -163,9 +156,6 @@ class DrawTreeLayerDelegate : public LayerDelegate {
   virtual void OnPaintLayer(gfx::Canvas* canvas) OVERRIDE {
     painted_ = true;
   }
-  virtual void OnLayerAnimationEnded(
-      const LayerAnimationSequence* animation) OVERRIDE {
-  }
 
   bool painted_;
 
@@ -182,9 +172,6 @@ class NullLayerDelegate : public LayerDelegate {
   // Overridden from LayerDelegate:
   virtual void OnPaintLayer(gfx::Canvas* canvas) OVERRIDE {
   }
-  virtual void OnLayerAnimationEnded(
-      const LayerAnimationSequence* animation) OVERRIDE {
-  }
 
   DISALLOW_COPY_AND_ASSIGN(NullLayerDelegate);
 };