cc: Defer first OutputSurface creation until client is ready

ui/compositor/compositor.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/compositor/compositor.h"
 
 #include <algorithm>
 #include <deque>
 
 #include "base/bind.h"
@@ skipping 274 matching lines @@
   settings.initial_debug_state.show_non_occluding_rects =
       command_line->HasSwitch(cc::switches::kUIShowNonOccludingRects);
 
   if (!!g_compositor_thread) {
     host_ = cc::LayerTreeHost::CreateThreaded(
         this, NULL, settings, g_compositor_thread->message_loop_proxy());
   } else {
     host_ = cc::LayerTreeHost::CreateSingleThreaded(this, this, NULL, settings);
   }
   host_->SetRootLayer(root_web_layer_);
-  host_->SetLayerTreeHostClientReady();
+  host_->SetLayerTreeHostClientReady(CreateOutputSurface(false));
 }
 
 Compositor::~Compositor() {
   TRACE_EVENT0("shutdown", "Compositor::destructor");
 
   DCHECK(g_compositor_initialized);
 
   CancelCompositorLock();
   DCHECK(!compositor_lock_);
 
@@ skipping 310 matching lines @@
     // CompositorObservers to be notified before starting another
     // draw cycle.
     ScheduleDraw();
   }
   FOR_EACH_OBSERVER(CompositorObserver,
                     observer_list_,
                     OnCompositingEnded(this));
 }
 
 }  // namespace ui