cc: Make separate interface for BeginFrame ipc from OutputSurface

cc/trees/layer_tree_host_unittest.cc

Index: cc/trees/layer_tree_host_unittest.cc
diff --git a/cc/trees/layer_tree_host_unittest.cc b/cc/trees/layer_tree_host_unittest.cc
index aedd0d937a43a69ffce015ea7507f522556a406a..29c2027625c681b34165c979afac90ae53a5e285 100644
--- a/cc/trees/layer_tree_host_unittest.cc
+++ b/cc/trees/layer_tree_host_unittest.cc
@@ -1971,7 +1971,8 @@ TEST(LayerTreeHostTest, PartialUpdatesWithGLRenderer) {
                                           shared_bitmap_manager.get(),
                                           NULL,
                                           settings,
-                                          base::MessageLoopProxy::current());
+                                          base::MessageLoopProxy::current(),
+                                          nullptr);
   client.SetLayerTreeHost(host.get());
   host->Composite(base::TimeTicks::Now());
 
@@ -1993,7 +1994,8 @@ TEST(LayerTreeHostTest, PartialUpdatesWithSoftwareRenderer) {
                                           shared_bitmap_manager.get(),
                                           NULL,
                                           settings,
-                                          base::MessageLoopProxy::current());
+                                          base::MessageLoopProxy::current(),
+                                          nullptr);
   client.SetLayerTreeHost(host.get());
   host->Composite(base::TimeTicks::Now());
 
@@ -2015,7 +2017,8 @@ TEST(LayerTreeHostTest, PartialUpdatesWithDelegatingRendererAndGLContent) {
                                           shared_bitmap_manager.get(),
                                           NULL,
                                           settings,
-                                          base::MessageLoopProxy::current());
+                                          base::MessageLoopProxy::current(),
+                                          nullptr);
   client.SetLayerTreeHost(host.get());
   host->Composite(base::TimeTicks::Now());
 
@@ -2038,7 +2041,8 @@ TEST(LayerTreeHostTest,
                                           shared_bitmap_manager.get(),
                                           NULL,
                                           settings,
-                                          base::MessageLoopProxy::current());
+                                          base::MessageLoopProxy::current(),
+                                          nullptr);
   client.SetLayerTreeHost(host.get());
   host->Composite(base::TimeTicks::Now());