Update from https://crrev.com/312398

gpu/command_buffer/client/gles2_trace_implementation_autogen.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.
 
 // This file is auto-generated from
 // gpu/command_buffer/build_gles2_cmd_buffer.py
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
@@ skipping 32 matching lines @@
 void BufferData(GLenum target,
                 GLsizeiptr size,
                 const void* data,
                 GLenum usage) override;
 void BufferSubData(GLenum target,
                    GLintptr offset,
                    GLsizeiptr size,
                    const void* data) override;
 GLenum CheckFramebufferStatus(GLenum target) override;
 void Clear(GLbitfield mask) override;
+void ClearBufferfi(GLenum buffer,
+                   GLint drawbuffers,
+                   GLfloat depth,
+                   GLint stencil) override;
+void ClearBufferfv(GLenum buffer,
+                   GLint drawbuffers,
+                   const GLfloat* value) override;
+void ClearBufferiv(GLenum buffer,
+                   GLint drawbuffers,
+                   const GLint* value) override;
+void ClearBufferuiv(GLenum buffer,
+                    GLint drawbuffers,
+                    const GLuint* value) override;
 void ClearColor(GLclampf red,
                 GLclampf green,
                 GLclampf blue,
                 GLclampf alpha) override;
 void ClearDepthf(GLclampf depth) override;
 void ClearStencil(GLint s) override;
 void ColorMask(GLboolean red,
                GLboolean green,
                GLboolean blue,
                GLboolean alpha) override;
@@ skipping 559 matching lines @@
                                   GLint bounds_height,
                                   GLfloat uv_x,
                                   GLfloat uv_y,
                                   GLfloat uv_width,
                                   GLfloat uv_height) override;
 void SwapInterval(GLint interval) override;
 void MatrixLoadfCHROMIUM(GLenum matrixMode, const GLfloat* m) override;
 void MatrixLoadIdentityCHROMIUM(GLenum matrixMode) override;
 void BlendBarrierKHR() override;
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_TRACE_IMPLEMENTATION_AUTOGEN_H_