Expose CHROMIUM_texture_mailbox/sync_point stubs in mojo public headers

mojo/gles2/gles2_impl.cc

 // 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.
 
 #include "mojo/public/c/gles2/gles2.h"
 
 #include "base/lazy_instance.h"
 #include "base/threading/thread_local.h"
+#include "gpu/GLES2/gl2extchromium.h"

[jamesr, 2014/08/13 04:54:17]

i added this and the GL_GLEXT_PROTOTYPES define to try to get
MojoGLES2gl{InsertSyncPoint,ProduceTexture,etc} to be marked as exported from
mojo_gles2_impl component. is that the right way to go about this?

 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "mojo/gles2/gles2_context.h"
 
 using mojo::gles2::GLES2Context;
 
 namespace {
 
 base::LazyInstance<base::ThreadLocalPointer<gpu::gles2::GLES2Interface> >::Leaky
     g_gpu_interface;
 
@@ skipping 39 matching lines @@
 void* MojoGLES2GetContextSupport(MojoGLES2Context context) {
   return static_cast<GLES2Context*>(context)->context_support();
 }
 
 #define VISIT_GL_CALL(Function, ReturnType, PARAMETERS, ARGUMENTS) \
   ReturnType gl##Function PARAMETERS {                             \
     DCHECK(g_gpu_interface.Get().Get());                           \
     return g_gpu_interface.Get().Get()->Function ARGUMENTS;        \
   }
 #include "mojo/public/c/gles2/gles2_call_visitor_autogen.h"
+#include "mojo/public/c/gles2/gles2_call_visitor_chromium_sync_point_autogen.h"
+#include "mojo/public/c/gles2/gles2_call_visitor_chromium_texture_mailbox_autogen.h"
 #undef VISIT_GL_CALL
 
 }  // extern "C"