cc: Allow DeferredInitialize to use DelegatingRenderer

cc/test/fake_output_surface_client.cc

Index: cc/test/fake_output_surface_client.cc
diff --git a/cc/test/fake_output_surface_client.cc b/cc/test/fake_output_surface_client.cc
index 2033aceec1c57dd3db93667ff7e1ce25cfa5e70e..6fabdf87d8a541532d01bd23dd3563d6f5e198f5 100644
--- a/cc/test/fake_output_surface_client.cc
+++ b/cc/test/fake_output_surface_client.cc
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "cc/output/output_surface.h"
 #include "cc/test/fake_output_surface_client.h"
 
 namespace cc {
@@ -10,6 +11,11 @@ void FakeOutputSurfaceClient::DeferredInitialize() {
   deferred_initialize_called_ = true;
 }
 
+void FakeOutputSurfaceClient::ReleaseGL() {
+  if (output_surface_)
+    output_surface_->ReleaseContextProvider();
+}
+
 void FakeOutputSurfaceClient::BeginFrame(const BeginFrameArgs& args) {
   begin_frame_count_++;
 }