Revert of Update robust read pixels to output number of columns and rows written.

ui/gl/gl_bindings_autogen_mock.h

 // Copyright 2016 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 1159 matching lines @@
                                               GLenum type,
                                               void* pixels);
 static void GL_BINDING_CALL Mock_glReadPixelsRobustANGLE(GLint x,
                                                          GLint y,
                                                          GLsizei width,
                                                          GLsizei height,
                                                          GLenum format,
                                                          GLenum type,
                                                          GLsizei bufSize,
                                                          GLsizei* length,
-                                                         GLsizei* columns,
-                                                         GLsizei* rows,
                                                          void* pixels);
 static void GL_BINDING_CALL Mock_glReadnPixelsRobustANGLE(GLint x,
                                                           GLint y,
                                                           GLsizei width,
                                                           GLsizei height,
                                                           GLenum format,
                                                           GLenum type,
                                                           GLsizei bufSize,
                                                           GLsizei* length,
-                                                          GLsizei* columns,
-                                                          GLsizei* rows,
                                                           void* data);
 static void GL_BINDING_CALL Mock_glReleaseShaderCompiler(void);
 static void GL_BINDING_CALL Mock_glRenderbufferStorage(GLenum target,
                                                        GLenum internalformat,
                                                        GLsizei width,
                                                        GLsizei height);
 static void GL_BINDING_CALL Mock_glRenderbufferStorageEXT(GLenum target,
                                                           GLenum internalformat,
                                                           GLsizei width,
                                                           GLsizei height);
@@ skipping 435 matching lines @@
                                                        GLboolean normalized,
                                                        GLsizei stride,
                                                        const void* ptr);
 static void GL_BINDING_CALL Mock_glViewport(GLint x,
                                             GLint y,
                                             GLsizei width,
                                             GLsizei height);
 static GLenum GL_BINDING_CALL Mock_glWaitSync(GLsync sync,
                                               GLbitfield flags,
                                               GLuint64 timeout);