Make ShaderTranslatorCache thread safe

android_webview/browser/hardware_renderer.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_HARDWARE_RENDERER_H_
 #define ANDROID_WEBVIEW_BROWSER_HARDWARE_RENDERER_H_
 
 #include <queue>
 
 #include "android_webview/browser/gl_view_renderer_manager.h"
@@ skipping 58 matching lines @@
 // TODO(boliu): Teach this class about RT.
 class DeferredGpuCommandService
     : public gpu::InProcessCommandBuffer::Service,
       public base::RefCountedThreadSafe<DeferredGpuCommandService> {
  public:
   DeferredGpuCommandService();
 
   virtual void ScheduleTask(const base::Closure& task) OVERRIDE;
   virtual void ScheduleIdleWork(const base::Closure& task) OVERRIDE;
   virtual bool UseVirtualizedGLContexts() OVERRIDE;
+  virtual scoped_refptr<gpu::gles2::ShaderTranslatorCache>
+      shader_translator_cache() OVERRIDE;
 
   void RunTasks();
 
   virtual void AddRef() const OVERRIDE;
   virtual void Release() const OVERRIDE;
 
  protected:
   virtual ~DeferredGpuCommandService();
   friend class base::RefCountedThreadSafe<DeferredGpuCommandService>;
 
  private:
   static void RequestProcessGLOnUIThread();
 
   base::Lock tasks_lock_;
   std::queue<base::Closure> tasks_;
+
+  scoped_refptr<gpu::gles2::ShaderTranslatorCache> shader_translator_cache_;
   DISALLOW_COPY_AND_ASSIGN(DeferredGpuCommandService);
 };
 
 }  // namespace internal
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_HARDWARE_RENDERER_H_