Mojo: Move C gles2 header files to mojo/public/c/gles2.

mojo/examples/compositor_app/mojo_context_provider.h

 // 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 "cc/output/context_provider.h"
+#include "mojo/public/c/gles2/gles2.h"
 #include "mojo/public/cpp/system/core.h"
-#include "mojo/public/gles2/gles2.h"
 
 namespace mojo {
 namespace examples {
 
 class MojoContextProvider : public cc::ContextProvider {
  public:
   explicit MojoContextProvider(ScopedMessagePipeHandle gl_pipe);
 
   // cc::ContextProvider implementation.
   virtual bool BindToCurrentThread() OVERRIDE;
@@ skipping 20 matching lines @@
   }
   void ContextLost();
 
   cc::ContextProvider::Capabilities capabilities_;
   ScopedMessagePipeHandle gl_pipe_;
   MojoGLES2Context context_;
 };
 
 }  // namespace examples
 }  // namespace mojo