Make ShaderTranslatorCache thread safe

gpu/command_buffer/service/gles2_cmd_decoder.h

 // 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.
 
 // This file contains the GLES2Decoder class.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_
 
 #include <vector>
 
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "gpu/command_buffer/common/capabilities.h"
 #include "gpu/command_buffer/service/common_decoder.h"
 #include "gpu/command_buffer/service/logger.h"
+#include "gpu/command_buffer/service/shader_translator_cache.h"
 #include "ui/gfx/size.h"
 #include "ui/gl/gl_context.h"
 
 namespace gfx {
 class GLContext;
 class GLSurface;
 }
 
 namespace gpu {
 
@@ skipping 60 matching lines @@
   void set_log_commands(bool log_commands) {
     log_commands_ = log_commands;
   }
 
   // Initializes the graphics context. Can create an offscreen
   // decoder with a frame buffer that can be referenced from the parent.
   // Takes ownership of GLContext.
   // Parameters:
   //  surface: the GL surface to render to.
   //  context: the GL context to render to.
+  //  shader_translator_cache: the translator cache to get retrieve shader
+  //      translators.
   //  offscreen: whether to make the context offscreen or not. When FBO 0 is
   //      bound, offscreen contexts render to an internal buffer, onscreen ones
   //      to the surface.
   //  size: the size if the GL context is offscreen.
   // Returns:
   //   true if successful.
-  virtual bool Initialize(const scoped_refptr<gfx::GLSurface>& surface,
-                          const scoped_refptr<gfx::GLContext>& context,
-                          bool offscreen,
-                          const gfx::Size& size,
-                          const DisallowedFeatures& disallowed_features,
-                          const std::vector<int32>& attribs) = 0;
+  virtual bool Initialize(
+      const scoped_refptr<gfx::GLSurface>& surface,
+      const scoped_refptr<gfx::GLContext>& context,
+      const scoped_refptr<ShaderTranslatorCache>& shader_translator_cache,
+      bool offscreen,
+      const gfx::Size& size,
+      const DisallowedFeatures& disallowed_features,
+      const std::vector<int32>& attribs) = 0;
 
   // Destroys the graphics context.
   virtual void Destroy(bool have_context) = 0;
 
   // Set the surface associated with the default FBO.
   virtual void SetSurface(const scoped_refptr<gfx::GLSurface>& surface) = 0;
 
   virtual void ProduceFrontBuffer(const Mailbox& mailbox) = 0;
 
   // Resize an offscreen frame buffer.
@@ skipping 120 matching lines @@
   bool debug_;
   bool log_commands_;
 
   DISALLOW_COPY_AND_ASSIGN(GLES2Decoder);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_