Cleanup GpuMemoryBuffer

content/browser/gpu/browser_gpu_channel_host_factory.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 "content/browser/gpu/browser_gpu_channel_host_factory.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread_restrictions.h"
@@ skipping 291 matching lines @@
   // In this case we need to wait for this before we can show any UI /anyway/,
   // so it won't cause additional jank.
   // TODO(piman): Make this asynchronous (http://crbug.com/125248).
   TRACE_EVENT0("browser",
                "BrowserGpuChannelHostFactory::CreateViewCommandBuffer");
   base::ThreadRestrictions::ScopedAllowWait allow_wait;
   request.event.Wait();
   return request.result;
 }
 
+void BrowserGpuChannelHostFactory::WaitForPendingGpuMemoryBufferUsageToComplete(
+    const base::Closure& callback) {
+  GpuChannelHost* host = GetGpuChannel();
+  if (!host) {
+    callback.Run();
+    return;
+  }
+
+  host->WaitForPendingGpuMemoryBufferUsageToComplete(callback);
+}
+
 GpuChannelHost* BrowserGpuChannelHostFactory::EstablishGpuChannelSync(
     CauseForGpuLaunch cause_for_gpu_launch) {
   EstablishGpuChannel(cause_for_gpu_launch, base::Closure());
 
   if (pending_request_.get())
     pending_request_->Wait();
 
   return gpu_channel_.get();
 }
 
@@ skipping 79 matching lines @@
   filter->AddRoute(MSG_ROUTING_CONTROL, handler);
 
   GetIOLoopProxy()->PostTask(
       FROM_HERE,
       base::Bind(&BrowserGpuChannelHostFactory::AddFilterOnIO,
                  gpu_host_id_,
                  filter));
 }
 
 }  // namespace content