Added EGL based GLContext....

app/gfx/gl/gl_context_osmesa.cc

 // 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.
 
-#include <GL/glew.h>
-#include <GL/osmew.h>
-
 #include <algorithm>
 
+#include "app/gfx/gl/gl_bindings.h"
 #include "app/gfx/gl/gl_context_osmesa.h"
 
 namespace gfx {
 
 OSMesaGLContext::OSMesaGLContext() : context_(NULL)
 {
 }
 
 OSMesaGLContext::~OSMesaGLContext() {
 }
 
-bool OSMesaGLContext::Initialize(void* shared_handle) {
+bool OSMesaGLContext::Initialize(GLContext* shared_context) {
   DCHECK(!context_);
 
   size_ = gfx::Size(1, 1);
   buffer_.reset(new int32[1]);
 
-  context_ = OSMesaCreateContext(GL_RGBA,
-                                 static_cast<OSMesaContext>(shared_handle));
+  OSMesaContext shared_handle = NULL;
+  if (shared_context)
+    shared_handle = static_cast<OSMesaContext>(shared_context->GetHandle());
+
+  context_ = OSMesaCreateContext(GL_RGBA, shared_handle);
   if (!context_)
     return false;
 
   if (!MakeCurrent()) {
     Destroy();
     return false;
   }
 
-  if (!InitializeGLEW()) {
-    Destroy();
-    return false;
-  }
-
   if (!InitializeCommon()) {
     Destroy();
     return false;
   }
 
   return true;
 }
 
 void OSMesaGLContext::Destroy() {
   if (context_) {
@@ skipping 54 matching lines @@
   buffer_.reset(new_buffer.release());
   size_ = new_size;
 
   // If this context is current, need to call MakeCurrent again so OSMesa uses
   // the new buffer.
   if (IsCurrent())
     MakeCurrent();
 }
 
 }  // namespace gfx