CC Animation: Unify ElementId in Blink Compositor Worker.

cc/layers/layer_unittest.cc

 // Copyright 2011 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/layers/layer.h"
 
 #include <stddef.h>
 
 #include "base/thread_task_runner_handle.h"
 #include "cc/animation/animation_host.h"
@@ skipping 2473 matching lines @@
       LayerImpl::Create(host_impl_.active_tree(), 1);
 
   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1,
                                   layer_tree_host_->SetRootLayer(test_layer));
 
   EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(2);
 
   test_layer->SetElementId(2);
   test_layer->SetMutableProperties(MutableProperty::kTransform);
 
-  EXPECT_EQ(0lu, impl_layer->element_id());
+  EXPECT_EQ(0, impl_layer->element_id());
   EXPECT_EQ(MutableProperty::kNone, impl_layer->mutable_properties());
 
   test_layer->PushPropertiesTo(impl_layer.get());
 
-  EXPECT_EQ(2lu, impl_layer->element_id());
+  EXPECT_EQ(2, impl_layer->element_id());
   EXPECT_EQ(MutableProperty::kTransform, impl_layer->mutable_properties());
 }
 
 }  // namespace
 }  // namespace cc