LayerTreeHostImpl knows if it has an output surface.

cc/trees/thread_proxy.cc

 // Copyright 2011 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 "cc/trees/thread_proxy.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/auto_reset.h"
@@ skipping 317 matching lines @@
       base::Bind(&ThreadProxy::SetRendererCapabilitiesMainThreadCopy,
                  main_thread_weak_ptr_,
                  impl()
                      .layer_tree_host_impl->GetRendererCapabilities()
                      .MainThreadCapabilities()));
 }
 
 void ThreadProxy::DidLoseOutputSurfaceOnImplThread() {
   TRACE_EVENT0("cc", "ThreadProxy::DidLoseOutputSurfaceOnImplThread");
   DCHECK(IsImplThread());
-  CheckOutputSurfaceStatusOnImplThread();
-}
-
-void ThreadProxy::CheckOutputSurfaceStatusOnImplThread() {
-  TRACE_EVENT0("cc", "ThreadProxy::CheckOutputSurfaceStatusOnImplThread");
-  DCHECK(IsImplThread());
-  if (!impl().layer_tree_host_impl->IsContextLost())
-    return;
   Proxy::MainThreadTaskRunner()->PostTask(
       FROM_HERE,
       base::Bind(&ThreadProxy::DidLoseOutputSurface, main_thread_weak_ptr_));
   impl().scheduler->DidLoseOutputSurface();
 }
 
 void ThreadProxy::CommitVSyncParameters(base::TimeTicks timebase,
                                         base::TimeDelta interval) {
   impl().scheduler->CommitVSyncParameters(timebase, interval);
 }
@@ skipping 769 matching lines @@
   }
 
   // Tell the main thread that the the newly-commited frame was drawn.
   if (impl().next_frame_is_newly_committed_frame) {
     impl().next_frame_is_newly_committed_frame = false;
     Proxy::MainThreadTaskRunner()->PostTask(
         FROM_HERE,
         base::Bind(&ThreadProxy::DidCommitAndDrawFrame, main_thread_weak_ptr_));
   }
 
-  if (draw_frame)
-    CheckOutputSurfaceStatusOnImplThread();
-
   if (result == DRAW_SUCCESS)
     impl().timing_history.DidFinishDrawing();
 
   DCHECK_NE(INVALID_RESULT, result);
   return result;
 }
 
 void ThreadProxy::ScheduledActionManageTiles() {
   TRACE_EVENT0("cc", "ThreadProxy::ScheduledActionManageTiles");
   DCHECK(impl().layer_tree_host_impl->settings().impl_side_painting);
@@ skipping 265 matching lines @@
 
   impl().timing_history.DidActivateSyncTree();
 }
 
 void ThreadProxy::DidManageTiles() {
   DCHECK(IsImplThread());
   impl().scheduler->DidManageTiles();
 }
 
 }  // namespace cc