Update from chromium https://crrev.com/304586

gpu/command_buffer/service/gles2_cmd_clear_framebuffer.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.
+
+#ifndef GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_CLEAR_FRAMEBUFFER_H_
+#define GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_CLEAR_FRAMEBUFFER_H_
+
+#include "gpu/command_buffer/service/gl_utils.h"
+#include "gpu/gpu_export.h"
+
+namespace gfx {
+class Size;
+}
+
+namespace gpu {
+namespace gles2 {
+class GLES2Decoder;
+}
+
+class GPU_EXPORT ClearFramebufferResourceManager {
+ public:
+  ClearFramebufferResourceManager(const gles2::GLES2Decoder* decoder);
+  ~ClearFramebufferResourceManager();
+
+
+  void ClearFramebuffer(const gles2::GLES2Decoder* decoder,
+                        const gfx::Size& framebuffer_size,
+                        GLbitfield mask,
+                        GLfloat clear_color_red,
+                        GLfloat clear_color_green,
+                        GLfloat clear_color_blue,
+                        GLfloat clear_color_alpha,
+                        GLfloat clear_depth_value,
+                        GLint clear_stencil_value);
+
+ private:
+  void Initialize(const gles2::GLES2Decoder* decoder);
+  void Destroy();
+
+  // The attributes used during invocation of the extension.
+  static const GLuint kVertexPositionAttrib = 0;
+
+  bool initialized_;
+  GLuint program_;
+  GLuint depth_handle_;
+  GLuint color_handle_;
+  GLuint buffer_id_;
+
+  DISALLOW_COPY_AND_ASSIGN(ClearFramebufferResourceManager);
+};
+
+}  // namespace gpu.
+
+#endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_CLEAR_FRAMEBUFFER_H_