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

cc/input/top_controls_manager_unittest.cc

Index: cc/input/top_controls_manager_unittest.cc
diff --git a/cc/input/top_controls_manager_unittest.cc b/cc/input/top_controls_manager_unittest.cc
index 788acbb9ea0857185bad534d8f14ff7e8317bc99..0d62a3c7dcaa3608bccea828ec329c55f20e36c4 100644
--- a/cc/input/top_controls_manager_unittest.cc
+++ b/cc/input/top_controls_manager_unittest.cc
@@ -12,7 +12,7 @@
 #include "base/time/time.h"
 #include "cc/input/top_controls_manager_client.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"
@@ -28,7 +28,9 @@ class MockTopControlsManagerClient : public TopControlsManagerClient {
   MockTopControlsManagerClient(float top_controls_height,
                                float top_controls_show_threshold,
                                float top_controls_hide_threshold)
-      : host_impl_(&proxy_, &shared_bitmap_manager_, &task_graph_runner_),
+      : host_impl_(&task_runner_provider_,
+                   &shared_bitmap_manager_,
+                   &task_graph_runner_),
         redraw_needed_(false),
         update_draw_properties_needed_(false),
         top_controls_shown_ratio_(1.f),
@@ -81,7 +83,7 @@ class MockTopControlsManagerClient : public TopControlsManagerClient {
   void SetTopControlsHeight(float height) { top_controls_height_ = height; }
 
  private:
-  FakeImplProxy proxy_;
+  FakeImplTaskRunnerProvider task_runner_provider_;
   TestSharedBitmapManager shared_bitmap_manager_;
   TestTaskGraphRunner task_graph_runner_;
   FakeLayerTreeHostImpl host_impl_;