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

cc/trees/damage_tracker_unittest.cc

Index: cc/trees/damage_tracker_unittest.cc
diff --git a/cc/trees/damage_tracker_unittest.cc b/cc/trees/damage_tracker_unittest.cc
index 9935e8603fd30e1147d4e1595a6545d87f8fe6c5..949baa2fe94275bfbacba1744487a652e7b970ff 100644
--- a/cc/trees/damage_tracker_unittest.cc
+++ b/cc/trees/damage_tracker_unittest.cc
@@ -8,7 +8,7 @@
 #include "cc/layers/layer_impl.h"
 #include "cc/output/filter_operation.h"
 #include "cc/output/filter_operations.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/geometry_test_utils.h"
 #include "cc/test/test_shared_bitmap_manager.h"
@@ -79,7 +79,9 @@ void EmulateDrawingOneFrame(LayerImpl* root) {
 class DamageTrackerTest : public testing::Test {
  public:
   DamageTrackerTest()
-      : host_impl_(&proxy_, &shared_bitmap_manager_, &task_graph_runner_) {}
+      : host_impl_(&task_runner_provider_,
+                   &shared_bitmap_manager_,
+                   &task_graph_runner_) {}
 
   scoped_ptr<LayerImpl> CreateTestTreeWithOneSurface() {
     scoped_ptr<LayerImpl> root =
@@ -172,7 +174,7 @@ class DamageTrackerTest : public testing::Test {
   }
 
  protected:
-  FakeImplProxy proxy_;
+  FakeImplTaskRunnerProvider task_runner_provider_;
   TestSharedBitmapManager shared_bitmap_manager_;
   TestTaskGraphRunner task_graph_runner_;
   FakeLayerTreeHostImpl host_impl_;