[Mojo] Remove dependency between mojo/public and gpu

mojo/public/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_GLES2_ADAPTOR_H_
+#define MOJO_PUBLIC_GLES2_ADAPTOR_H_
+
+// Note: This header should be compilable as C.
+
+#include <stdint.h>
+
+#if defined(COMPONENT_BUILD)
+#if defined(WIN32)
+
+#if defined(MOJO_GLES2_IMPLEMENTATION)
+#define MOJO_GLES2_EXPORT __declspec(dllexport)
+#else
+#define MOJO_GLES2_EXPORT __declspec(dllimport)
+#endif  // defined(GFX_IMPLEMENTATION)
+
+#else  // defined(WIN32)
+#if defined(MOJO_GLES2_IMPLEMENTATION)
+#define MOJO_GLES2_EXPORT __attribute__((visibility("default")))
+#else
+#define MOJO_GLES2_EXPORT
+#endif
+#endif
+
+#else  // defined(COMPONENT_BUILD)
+#define MOJO_GLES2_EXPORT
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+MOJO_GLES2_EXPORT void MojoGLES2Initialize();
+MOJO_GLES2_EXPORT void MojoGLES2Terminate();
+// TODO(abarth): MojoGLES2MakeCurrent should take a MojoHandle.
+MOJO_GLES2_EXPORT void MojoGLES2MakeCurrent(uint64_t encoded);
+MOJO_GLES2_EXPORT void MojoGLES2SwapBuffers();
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // MOJO_PUBLIC_GLES2_ADAPTOR_H_