CC Animation: Use ElementId to attach CC animation players.

cc/animation/element_animations_unittest.cc

Index: cc/animation/element_animations_unittest.cc
diff --git a/cc/animation/element_animations_unittest.cc b/cc/animation/element_animations_unittest.cc
index 305b47d0990b9344cfa748b835c1ba2b3f908e1f..98bce1a912a38f60c21cd26a2379b93fddb74f26 100644
--- a/cc/animation/element_animations_unittest.cc
+++ b/cc/animation/element_animations_unittest.cc
@@ -397,7 +397,7 @@ TEST_F(ElementAnimationsTest, Activation) {
   EXPECT_EQ(1u, host->all_element_animations_for_testing().size());
   EXPECT_EQ(1u, host_impl->all_element_animations_for_testing().size());
 
-  // Initially, both animationss should be inactive.
+  // Initially, both animations should be inactive.
   EXPECT_EQ(0u, host->active_element_animations_for_testing().size());
   EXPECT_EQ(0u, host_impl->active_element_animations_for_testing().size());
 
@@ -407,7 +407,7 @@ TEST_F(ElementAnimationsTest, Activation) {
 
   animations->PushPropertiesTo(animations_impl.get());
   animations_impl->ActivateAnimations();
-  // Both animationss should now be active.
+  // Both animations should now be active.
   EXPECT_EQ(1u, host->active_element_animations_for_testing().size());
   EXPECT_EQ(1u, host_impl->active_element_animations_for_testing().size());