Change cc::ElementId to be a uint64_t

third_party/WebKit/Source/platform/graphics/GraphicsLayerTest.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 109 matching lines @@
 
   std::unique_ptr<CompositorAnimationTimeline> compositor_timeline =
       CompositorAnimationTimeline::Create();
   AnimationPlayerForTesting player;
 
   CompositorAnimationHost host(LayerTreeView()->CompositorAnimationHost());
 
   host.AddTimeline(*compositor_timeline);
   compositor_timeline->PlayerAttached(player);
 
-  platform_layer_->SetElementId(CompositorElementId(platform_layer_->Id(), 0));
+  platform_layer_->SetElementId(CompositorElementId(platform_layer_->Id()));
 
   player.CompositorPlayer()->AttachElement(platform_layer_->GetElementId());
   ASSERT_TRUE(player.CompositorPlayer()->IsElementAttached());
 
   player.CompositorPlayer()->AddAnimation(std::move(float_animation));
 
   ASSERT_TRUE(platform_layer_->HasTickingAnimationForTesting());
 
   graphics_layer_->SetShouldFlattenTransform(false);
 
@@ skipping 55 matching lines @@
     return Platform::Current()->CurrentThread()->Scheduler()->TimerTaskRunner();
   }
 
   DEFINE_INLINE_VIRTUAL_TRACE() { ScrollableArea::Trace(visitor); }
 
  private:
   ScrollOffset scroll_offset_;
 };
 
 }  // namespace blink