Use element id's for animations

cc/animation/element_animations_unittest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/animation/element_animations.h"
 
 #include "cc/animation/animation_delegate.h"
 #include "cc/animation/animation_host.h"
 #include "cc/animation/animation_id_provider.h"
 #include "cc/animation/animation_player.h"
@@ skipping 1178 matching lines @@
   animations->Animate(kInitialTickTime + TimeDelta::FromMilliseconds(1000));
   animations->UpdateState(true, events.get());
   EXPECT_TRUE(animations->HasActiveAnimation());
   EXPECT_EQ(0.f, client_.GetOpacity(element_id_, ElementListType::ACTIVE));
   animations->Animate(kInitialTickTime + TimeDelta::FromMilliseconds(2000));
   animations->UpdateState(true, events.get());
   EXPECT_TRUE(animations->HasActiveAnimation());
   EXPECT_EQ(0.f, client_.GetOpacity(element_id_, ElementListType::ACTIVE));
 
   // Send the synchronized start time.
-  animations->NotifyAnimationStarted(
-      AnimationEvent(AnimationEvent::STARTED, 0, 1, TargetProperty::OPACITY,
-                     kInitialTickTime + TimeDelta::FromMilliseconds(2000)));
+  animations->NotifyAnimationStarted(AnimationEvent(
+      AnimationEvent::STARTED, ElementId(), 1, TargetProperty::OPACITY,
+      kInitialTickTime + TimeDelta::FromMilliseconds(2000)));
   animations->Animate(kInitialTickTime + TimeDelta::FromMilliseconds(5000));
   animations->UpdateState(true, events.get());
   EXPECT_EQ(1.f, client_.GetOpacity(element_id_, ElementListType::ACTIVE));
   EXPECT_FALSE(animations->HasActiveAnimation());
 }
 
 // Tests that two queued animations affecting the same property run in sequence.
 TEST_F(ElementAnimationsTest, TrivialQueuing) {
   CreateTestLayer(false, false);
   AttachTimelinePlayerLayer();
@@ skipping 2186 matching lines @@
   EXPECT_FALSE(animations->IsPotentiallyAnimatingProperty(
       TargetProperty::OPACITY, ElementListType::ACTIVE));
   EXPECT_FALSE(animations->IsCurrentlyAnimatingProperty(
       TargetProperty::OPACITY, ElementListType::PENDING));
   EXPECT_FALSE(animations->IsCurrentlyAnimatingProperty(
       TargetProperty::OPACITY, ElementListType::ACTIVE));
 }
 
 }  // namespace
 }  // namespace cc