Update from https://crrev.com/320343

gpu/command_buffer/client/gles2_interface_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 130 matching lines @@
 virtual void DepthMask(GLboolean flag) = 0;
 virtual void DepthRangef(GLclampf zNear, GLclampf zFar) = 0;
 virtual void DetachShader(GLuint program, GLuint shader) = 0;
 virtual void Disable(GLenum cap) = 0;
 virtual void DisableVertexAttribArray(GLuint index) = 0;
 virtual void DrawArrays(GLenum mode, GLint first, GLsizei count) = 0;
 virtual void DrawElements(GLenum mode,
                           GLsizei count,
                           GLenum type,
                           const void* indices) = 0;
+virtual void DrawRangeElements(GLenum mode,
+                               GLuint start,
+                               GLuint end,
+                               GLsizei count,
+                               GLenum type,
+                               const void* indices) = 0;
 virtual void Enable(GLenum cap) = 0;
 virtual void EnableVertexAttribArray(GLuint index) = 0;
 virtual GLsync FenceSync(GLenum condition, GLbitfield flags) = 0;
 virtual void Finish() = 0;
 virtual void Flush() = 0;
 virtual void FramebufferRenderbuffer(GLenum target,
                                      GLenum attachment,
                                      GLenum renderbuffertarget,
                                      GLuint renderbuffer) = 0;
 virtual void FramebufferTexture2D(GLenum target,
@@ skipping 415 matching lines @@
                                            GLenum type,
                                            GLuint offset) = 0;
 virtual GLboolean EnableFeatureCHROMIUM(const char* feature) = 0;
 virtual void* MapBufferCHROMIUM(GLuint target, GLenum access) = 0;
 virtual GLboolean UnmapBufferCHROMIUM(GLuint target) = 0;
 virtual void* MapBufferSubDataCHROMIUM(GLuint target,
                                        GLintptr offset,
                                        GLsizeiptr size,
                                        GLenum access) = 0;
 virtual void UnmapBufferSubDataCHROMIUM(const void* mem) = 0;
+virtual void* MapBufferRange(GLenum target,
+                             GLintptr offset,
+                             GLsizeiptr size,
+                             GLbitfield access) = 0;
+virtual GLboolean UnmapBuffer(GLenum target) = 0;
 virtual void* MapTexSubImage2DCHROMIUM(GLenum target,
                                        GLint level,
                                        GLint xoffset,
                                        GLint yoffset,
                                        GLsizei width,
                                        GLsizei height,
                                        GLenum format,
                                        GLenum type,
                                        GLenum access) = 0;
 virtual void UnmapTexSubImage2DCHROMIUM(const void* mem) = 0;
@@ skipping 125 matching lines @@
                                           GLint bounds_height,
                                           GLfloat uv_x,
                                           GLfloat uv_y,
                                           GLfloat uv_width,
                                           GLfloat uv_height) = 0;
 virtual void SwapInterval(GLint interval) = 0;
 virtual void MatrixLoadfCHROMIUM(GLenum matrixMode, const GLfloat* m) = 0;
 virtual void MatrixLoadIdentityCHROMIUM(GLenum matrixMode) = 0;
 virtual void BlendBarrierKHR() = 0;
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_INTERFACE_AUTOGEN_H_