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

ui/gl/gl_bindings_api_autogen_gl.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 831 matching lines @@
 void glQueryCounterFn(GLuint id, GLenum target) override;
 void glReadBufferFn(GLenum src) override;
 void glReadnPixelsRobustANGLEFn(GLint x,
                                 GLint y,
                                 GLsizei width,
                                 GLsizei height,
                                 GLenum format,
                                 GLenum type,
                                 GLsizei bufSize,
                                 GLsizei* length,
-                                GLsizei* columns,
-                                GLsizei* rows,
                                 void* data) override;
 void glReadPixelsFn(GLint x,
                     GLint y,
                     GLsizei width,
                     GLsizei height,
                     GLenum format,
                     GLenum type,
                     void* pixels) override;
 void glReadPixelsRobustANGLEFn(GLint x,
                                GLint y,
                                GLsizei width,
                                GLsizei height,
                                GLenum format,
                                GLenum type,
                                GLsizei bufSize,
                                GLsizei* length,
-                               GLsizei* columns,
-                               GLsizei* rows,
                                void* pixels) override;
 void glReleaseShaderCompilerFn(void) override;
 void glRenderbufferStorageEXTFn(GLenum target,
                                 GLenum internalformat,
                                 GLsizei width,
                                 GLsizei height) override;
 void glRenderbufferStorageMultisampleFn(GLenum target,
                                         GLsizei samples,
                                         GLenum internalformat,
                                         GLsizei width,
@@ skipping 342 matching lines @@
                               GLsizei stride,
                               const void* ptr) override;
 void glVertexAttribPointerFn(GLuint indx,
                              GLint size,
                              GLenum type,
                              GLboolean normalized,
                              GLsizei stride,
                              const void* ptr) override;
 void glViewportFn(GLint x, GLint y, GLsizei width, GLsizei height) override;
 GLenum glWaitSyncFn(GLsync sync, GLbitfield flags, GLuint64 timeout) override;