Fix incorrect binding spec for multisampled_render_to_texture APIs

ui/gl/gl_bindings_autogen_mock.cc

 // 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
 // ui/gl/generate_bindings.py
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
@@ skipping 1811 matching lines @@
   interface_->RenderbufferStorageEXT(target, internalformat, width, height);
 }
 
 void GL_BINDING_CALL
 MockGLInterface::Mock_glRenderbufferStorageMultisample(GLenum target,
                                                        GLsizei samples,
                                                        GLenum internalformat,
                                                        GLsizei width,
                                                        GLsizei height) {
   MakeFunctionUnique("glRenderbufferStorageMultisample");
-  interface_->RenderbufferStorageMultisampleEXT(target, samples, internalformat,
-                                                width, height);
+  interface_->RenderbufferStorageMultisample(target, samples, internalformat,
+                                             width, height);
 }
 
 void GL_BINDING_CALL
 MockGLInterface::Mock_glRenderbufferStorageMultisampleANGLE(
     GLenum target,
     GLsizei samples,
     GLenum internalformat,
     GLsizei width,
     GLsizei height) {
   MakeFunctionUnique("glRenderbufferStorageMultisampleANGLE");
@@ skipping 1366 matching lines @@
   if (strcmp(name, "glVertexAttribPointer") == 0)
     return reinterpret_cast<void*>(Mock_glVertexAttribPointer);
   if (strcmp(name, "glViewport") == 0)
     return reinterpret_cast<void*>(Mock_glViewport);
   if (strcmp(name, "glWaitSync") == 0)
     return reinterpret_cast<void*>(Mock_glWaitSync);
   return reinterpret_cast<void*>(&MockInvalidFunction);
 }
 
 }  // namespace gfx