Make the Pepper proxy support in-process font rendering.

webkit/glue/gl_bindings_skia_cmd_buffer.cc

 // Copyright (c) 2011 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 "webkit/glue/gl_bindings_skia_cmd_buffer.h"
 
+#ifndef GL_GLEXT_PROTOTYPES
 #define GL_GLEXT_PROTOTYPES
+#endif
 #include "gpu/GLES2/gl2.h"
 #include "gpu/GLES2/gl2ext.h"
 
 #include "third_party/skia/gpu/include/GrGLInterface.h"
 
 namespace webkit_glue {
 
 void BindSkiaToCommandBufferGL() {
   static GrGLInterface cmd_buffer_interface = {
     kES2_GrGLBinding,
@@ skipping 109 matching lines @@
   };
   static bool host_StubGL_initialized = false;
   if (!host_StubGL_initialized) {
     GrGLSetGLInterface(&cmd_buffer_interface);
     host_StubGL_initialized = true;
   }
 }
 
 }  // namespace webkit_glue