Forward input tasks to the Blink scheduler

cc/trees/single_thread_proxy.cc

Index: cc/trees/single_thread_proxy.cc
diff --git a/cc/trees/single_thread_proxy.cc b/cc/trees/single_thread_proxy.cc
index 9469d5984d342fb62666c3b5dfe8b002541ca1e5..3cd2a9c21a60c829f6c644db5b636186503695c1 100644
--- a/cc/trees/single_thread_proxy.cc
+++ b/cc/trees/single_thread_proxy.cc
@@ -22,14 +22,17 @@ namespace cc {
 
 scoped_ptr<Proxy> SingleThreadProxy::Create(
     LayerTreeHost* layer_tree_host,
-    LayerTreeHostSingleThreadClient* client) {
+    LayerTreeHostSingleThreadClient* client,
+    scoped_refptr<cc::MainThreadTaskRunner> main_task_runner) {
   return make_scoped_ptr(
-      new SingleThreadProxy(layer_tree_host, client)).PassAs<Proxy>();
+      new SingleThreadProxy(layer_tree_host, client, main_task_runner))
+          .PassAs<Proxy>();
 }
 
 SingleThreadProxy::SingleThreadProxy(LayerTreeHost* layer_tree_host,
-                                     LayerTreeHostSingleThreadClient* client)
-    : Proxy(NULL),
+    LayerTreeHostSingleThreadClient* client,
+    scoped_refptr<cc::MainThreadTaskRunner> main_task_runner)
+    : Proxy(main_task_runner, NULL),
       layer_tree_host_(layer_tree_host),
       client_(client),
       next_frame_is_newly_committed_frame_(false),