Implemented offscreen rendering path for GLES2CmdDecoder on Linux....

gpu/command_buffer/service/gles2_cmd_decoder.h

 // Copyright (c) 2009 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 <build/build_config.h>
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 #include "base/callback.h"
 #if defined(OS_MACOSX)
 #include "app/surface/transport_dib.h"
 #endif
 
 #include "gfx/size.h"
 #include "gpu/command_buffer/service/common_decoder.h"
 
 
 namespace gpu {
 // Forward-declared instead of including x_utils.h, because including glx.h
 // causes havok.
-class XWindowWrapper;
+class GLXContextWrapper;
 
 namespace gles2 {
 
 class ContextGroup;
 class GLES2Util;
 
 // This class implements the AsyncAPIInterface interface, decoding GLES2
 // commands and calling GL.
 class GLES2Decoder : public CommonDecoder {
  public:
   typedef error::Error Error;
 
   // Creates a decoder.
   static GLES2Decoder* Create(ContextGroup* group);
 
   virtual ~GLES2Decoder();
 
   bool debug() const {
     return debug_;
   }
 
   void set_debug(bool debug) {
     debug_ = debug;
   }
 
 #if defined(OS_LINUX)
-  void set_window_wrapper(XWindowWrapper *window) {
-    window_ = window;
+  void set_context_wrapper(GLXContextWrapper *context) {
+    context_ = context;
   }
-  XWindowWrapper* window() const {
-    return window_;
+  GLXContextWrapper* context() const {
+    return context_;
   }
 #elif defined(OS_WIN)
   void set_hwnd(HWND hwnd) {
     hwnd_ = hwnd;
   }
 
   HWND hwnd() const {
     return hwnd_;
   }
 #elif defined(OS_MACOSX)
@@ skipping 33 matching lines @@
 
  protected:
   explicit GLES2Decoder(ContextGroup* group);
 
   ContextGroup* group_;
 
  private:
   bool debug_;
 
 #if defined(OS_LINUX)
-  XWindowWrapper *window_;
+  GLXContextWrapper *context_;
 #elif defined(OS_WIN)
   // Handle to the GL device.
   HWND hwnd_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(GLES2Decoder);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_