cc: Split Proxy to eliminate unnecessary dependencies on the impl side

cc/input/scroll_state_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/input/scroll_state.h"
 
 #include "cc/layers/layer_impl.h"
-#include "cc/test/fake_impl_proxy.h"
+#include "cc/test/fake_impl_task_runner_provider.h"
 #include "cc/test/fake_layer_tree_host_impl.h"
 #include "cc/test/test_shared_bitmap_manager.h"
 #include "cc/test/test_task_graph_runner.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace cc {
 
 class ScrollStateTest : public testing::Test {};
 
@@ skipping 31 matching lines @@
   EXPECT_FALSE(scrollState.FullyConsumed());
 
   scrollState.ConsumeDelta(scrollState.delta_x(), scrollState.delta_y());
   EXPECT_TRUE(scrollState.delta_consumed_for_scroll_sequence());
   EXPECT_TRUE(scrollState.FullyConsumed());
 }
 
 TEST_F(ScrollStateTest, CurrentNativeScrollingScrollable) {
   ScrollState scrollState(0, 0, 0, 0, false, false, false);
 
-  FakeImplProxy proxy;
+  FakeImplTaskRunnerProvider task_runner_provider;
   TestSharedBitmapManager shared_bitmap_manager;
   TestTaskGraphRunner task_graph_runner;
-  FakeLayerTreeHostImpl host_impl(&proxy, &shared_bitmap_manager,
+  FakeLayerTreeHostImpl host_impl(&task_runner_provider, &shared_bitmap_manager,
                                   &task_graph_runner);
 
   scoped_ptr<LayerImpl> layer_impl =
       LayerImpl::Create(host_impl.active_tree(), 1);
   scrollState.set_current_native_scrolling_layer(layer_impl.get());
   EXPECT_EQ(layer_impl, scrollState.current_native_scrolling_layer());
 }
 
 TEST_F(ScrollStateTest, FullyConsumed) {
   ScrollState scrollState(1, 3, 0, 0, 0, false, false);
   EXPECT_FALSE(scrollState.FullyConsumed());
 
   scrollState.ConsumeDelta(1, 3);
   EXPECT_TRUE(scrollState.FullyConsumed());
 }
 }  // namespace cc