WebVR compositor bypass via BrowserMain context + mailbox

chrome/browser/android/vr_shell/vr_shell_gpu_renderer.h

+// Copyright 2017 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 CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_GPU_RENDERER_H_
+#define CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_GPU_RENDERER_H_
+
+#include "gpu/command_buffer/client/gles2_interface.h"
+
+namespace gpu {
+namespace gles2 {
+class GLES2Interface;
+}
+}
+
+namespace vr_shell {
+
+class GpuRenderer final {
+ public:
+  explicit GpuRenderer(gpu::gles2::GLES2Interface*);
+  ~GpuRenderer();
+
+  void DrawQuad(gpu::gles2::GLES2Interface*, GLuint textureHandle);
+
+ private:
+  GLuint m_programHandle;
+  GLuint m_positionHandle;
+  GLuint m_texCoordHandle;
+  GLuint m_texUniformHandle;
+  GLuint m_vertexBuffer;
+};
+
+}  // namespace vr_shell
+
+#endif  // CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_GPU_RENDERER_H_