gpu: Allow waiting on sync tokens without sync token client.

android_webview/browser/deferred_gpu_command_service.cc

 // Copyright 2014 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 "android_webview/browser/deferred_gpu_command_service.h"
 
 #include "android_webview/browser/gl_view_renderer_manager.h"
 #include "android_webview/browser/render_thread_manager.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
@@ skipping 53 matching lines @@
 
 // static
 DeferredGpuCommandService* DeferredGpuCommandService::GetInstance() {
   DCHECK(g_service.Get().get());
   return g_service.Get().get();
 }
 
 DeferredGpuCommandService::DeferredGpuCommandService()
     : gpu::InProcessCommandBuffer::Service(
           content::GetGpuPreferencesFromCommandLine()),
-      sync_point_manager_(new gpu::SyncPointManager(true)) {
-}
+      sync_point_manager_(new gpu::SyncPointManager()) {}
 
 DeferredGpuCommandService::~DeferredGpuCommandService() {
   base::AutoLock lock(tasks_lock_);
   DCHECK(tasks_.empty());
 }
 
 // This method can be called on any thread.
 // static
 void DeferredGpuCommandService::RequestProcessGL(bool for_idle) {
   RenderThreadManager* renderer_state =
@@ skipping 121 matching lines @@
 
 void DeferredGpuCommandService::Release() const {
   base::RefCountedThreadSafe<DeferredGpuCommandService>::Release();
 }
 
 bool DeferredGpuCommandService::BlockThreadOnWaitSyncToken() const {
   return true;
 }
 
 }  // namespace android_webview