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

ui/gl/gl_mock_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 847 matching lines @@
                   GLint location,
                   GLenum genMode,
                   GLint components,
                   const GLfloat* coeffs));
 MOCK_METHOD4(
     PushDebugGroup,
     void(GLenum source, GLuint id, GLsizei length, const char* message));
 MOCK_METHOD2(PushGroupMarkerEXT, void(GLsizei length, const char* marker));
 MOCK_METHOD2(QueryCounter, void(GLuint id, GLenum target));
 MOCK_METHOD1(ReadBuffer, void(GLenum src));
-// TODO(zmo): crbug.com/456340
-// glReadnPixelsRobustANGLE cannot be mocked because it has 11 args.
+MOCK_METHOD9(ReadnPixelsRobustANGLE,
+             void(GLint x,
+                  GLint y,
+                  GLsizei width,
+                  GLsizei height,
+                  GLenum format,
+                  GLenum type,
+                  GLsizei bufSize,
+                  GLsizei* length,
+                  void* data));
 MOCK_METHOD7(ReadPixels,
              void(GLint x,
                   GLint y,
                   GLsizei width,
                   GLsizei height,
                   GLenum format,
                   GLenum type,
                   void* pixels));
-// TODO(zmo): crbug.com/456340
-// glReadPixelsRobustANGLE cannot be mocked because it has 11 args.
+MOCK_METHOD9(ReadPixelsRobustANGLE,
+             void(GLint x,
+                  GLint y,
+                  GLsizei width,
+                  GLsizei height,
+                  GLenum format,
+                  GLenum type,
+                  GLsizei bufSize,
+                  GLsizei* length,
+                  void* pixels));
 MOCK_METHOD0(ReleaseShaderCompiler, void());
 MOCK_METHOD4(
     RenderbufferStorageEXT,
     void(GLenum target, GLenum internalformat, GLsizei width, GLsizei height));
 MOCK_METHOD5(RenderbufferStorageMultisample,
              void(GLenum target,
                   GLsizei samples,
                   GLenum internalformat,
                   GLsizei width,
                   GLsizei height));
@@ skipping 307 matching lines @@
                   const void* ptr));
 MOCK_METHOD6(VertexAttribPointer,
              void(GLuint indx,
                   GLint size,
                   GLenum type,
                   GLboolean normalized,
                   GLsizei stride,
                   const void* ptr));
 MOCK_METHOD4(Viewport, void(GLint x, GLint y, GLsizei width, GLsizei height));
 MOCK_METHOD3(WaitSync, GLenum(GLsync sync, GLbitfield flags, GLuint64 timeout));