Remove Mojo GLES2 API

mojo/public/c/gles2/gles2.h

-// Copyright 2013 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.
-
-#ifndef MOJO_PUBLIC_C_GLES2_GLES2_H_
-#define MOJO_PUBLIC_C_GLES2_GLES2_H_
-
-// Note: This header should be compilable as C.
-
-#include <GLES2/gl2.h>
-#include <stdint.h>
-
-#include "mojo/public/c/gles2/gles2_export.h"
-#include "mojo/public/c/gles2/gles2_types.h"
-#include "mojo/public/c/system/types.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-MOJO_GLES2_EXPORT MojoGLES2Context
-MojoGLES2CreateContext(MojoHandle handle,
-                       const int32_t* attrib_list,
-                       MojoGLES2ContextLost lost_callback,
-                       void* closure);
-MOJO_GLES2_EXPORT void MojoGLES2DestroyContext(MojoGLES2Context context);
-MOJO_GLES2_EXPORT void MojoGLES2MakeCurrent(MojoGLES2Context context);
-MOJO_GLES2_EXPORT void MojoGLES2SwapBuffers(void);
-
-// TODO(piman): We shouldn't have to leak this interface, especially in a
-// type-unsafe way.
-MOJO_GLES2_EXPORT void* MojoGLES2GetGLES2Interface(MojoGLES2Context context);
-
-#define VISIT_GL_CALL(Function, ReturnType, PARAMETERS, ARGUMENTS) \
-  MOJO_GLES2_EXPORT ReturnType GL_APIENTRY gl##Function PARAMETERS;
-#include "mojo/public/c/gles2/gles2_call_visitor_autogen.h"
-#undef VISIT_GL_CALL
-
-#ifdef __cplusplus
-}  // extern "C"
-#endif
-
-#endif  // MOJO_PUBLIC_C_GLES2_GLES2_H_