aw: Improve DeferredGpuCommandService scheduling

android_webview/browser/deferred_gpu_command_service.h

 // 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.
 
 #ifndef ANDROID_WEBVIEW_BROWSER_DEFERRED_GPU_COMMAND_SERVICE_H_
 #define ANDROID_WEBVIEW_BROWSER_DEFERRED_GPU_COMMAND_SERVICE_H_
 
 #include <queue>
 
 #include "base/lazy_instance.h"
 #include "base/memory/ref_counted.h"
 #include "base/threading/thread_local.h"
 #include "gpu/command_buffer/service/in_process_command_buffer.h"
 
 namespace android_webview {
 
 class ScopedAllowGL {
  public:
   ScopedAllowGL();
   ~ScopedAllowGL();
 
   static bool IsAllowed();
+  static bool NeedSchedule();
 
  private:
   static base::LazyInstance<base::ThreadLocalBoolean> allow_gl;
 
   DISALLOW_COPY_AND_ASSIGN(ScopedAllowGL);
 };
 
 class DeferredGpuCommandService
     : public gpu::InProcessCommandBuffer::Service,
       public base::RefCountedThreadSafe<DeferredGpuCommandService> {
@@ skipping 24 matching lines @@
   base::Lock tasks_lock_;
   std::queue<base::Closure> tasks_;
 
   scoped_refptr<gpu::gles2::ShaderTranslatorCache> shader_translator_cache_;
   DISALLOW_COPY_AND_ASSIGN(DeferredGpuCommandService);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_DEFERRED_GPU_COMMAND_SERVICE_H_