Implementing FlushMappedBufferRange in GPU command buffer.

gpu/command_buffer/client/gles2_c_lib_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 1228 matching lines @@
 }
 void* GL_APIENTRY GLES2MapBufferRange(GLenum target,
                                       GLintptr offset,
                                       GLsizeiptr size,
                                       GLbitfield access) {
   return gles2::GetGLContext()->MapBufferRange(target, offset, size, access);
 }
 GLboolean GL_APIENTRY GLES2UnmapBuffer(GLenum target) {
   return gles2::GetGLContext()->UnmapBuffer(target);
 }
+void GL_APIENTRY GLES2FlushMappedBufferRange(GLenum target,
+                                             GLintptr offset,
+                                             GLsizeiptr size) {
+  gles2::GetGLContext()->FlushMappedBufferRange(target, offset, size);
+}
 void* GL_APIENTRY GLES2MapTexSubImage2DCHROMIUM(GLenum target,
                                                 GLint level,
                                                 GLint xoffset,
                                                 GLint yoffset,
                                                 GLsizei width,
                                                 GLsizei height,
                                                 GLenum format,
                                                 GLenum type,
                                                 GLenum access) {
   return gles2::GetGLContext()->MapTexSubImage2DCHROMIUM(
@@ skipping 1386 matching lines @@
         reinterpret_cast<GLES2FunctionPointer>(glUnmapBufferSubDataCHROMIUM),
     },
     {
         "glMapBufferRange",
         reinterpret_cast<GLES2FunctionPointer>(glMapBufferRange),
     },
     {
         "glUnmapBuffer", reinterpret_cast<GLES2FunctionPointer>(glUnmapBuffer),
     },
     {
+        "glFlushMappedBufferRange",
+        reinterpret_cast<GLES2FunctionPointer>(glFlushMappedBufferRange),
+    },
+    {
         "glMapTexSubImage2DCHROMIUM",
         reinterpret_cast<GLES2FunctionPointer>(glMapTexSubImage2DCHROMIUM),
     },
     {
         "glUnmapTexSubImage2DCHROMIUM",
         reinterpret_cast<GLES2FunctionPointer>(glUnmapTexSubImage2DCHROMIUM),
     },
     {
         "glResizeCHROMIUM",
         reinterpret_cast<GLES2FunctionPointer>(glResizeCHROMIUM),
@@ skipping 324 matching lines @@
         reinterpret_cast<GLES2FunctionPointer>(
             glUniformMatrix4fvStreamTextureMatrixCHROMIUM),
     },
     {
         NULL, NULL,
     },
 };
 
 }  // namespace gles2
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_C_LIB_AUTOGEN_H_