Cache GL's viewport on the GPU command buffer client side.

gpu/command_buffer/client/gles2_implementation_impl_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 2764 matching lines @@
   GPU_CLIENT_SINGLE_THREAD_CHECK();
   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glVertexAttribI4uiv(" << indx
                      << ", " << static_cast<const void*>(values) << ")");
   size_t count = 4;
   for (size_t ii = 0; ii < count; ++ii)
     GPU_CLIENT_LOG("value[" << ii << "]: " << values[ii]);
   helper_->VertexAttribI4uivImmediate(indx, values);
   CheckGLError();
 }
 
-void GLES2Implementation::Viewport(GLint x,
-                                   GLint y,
-                                   GLsizei width,
-                                   GLsizei height) {
-  GPU_CLIENT_SINGLE_THREAD_CHECK();
-  GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glViewport(" << x << ", " << y
-                     << ", " << width << ", " << height << ")");
-  if (width < 0) {
-    SetGLError(GL_INVALID_VALUE, "glViewport", "width < 0");
-    return;
-  }
-  if (height < 0) {
-    SetGLError(GL_INVALID_VALUE, "glViewport", "height < 0");
-    return;
-  }
-  helper_->Viewport(x, y, width, height);
-  CheckGLError();
-}
-
 void GLES2Implementation::BlitFramebufferCHROMIUM(GLint srcX0,
                                                   GLint srcY0,
                                                   GLint srcX1,
                                                   GLint srcY1,
                                                   GLint dstX0,
                                                   GLint dstY0,
                                                   GLint dstX1,
                                                   GLint dstY1,
                                                   GLbitfield mask,
                                                   GLenum filter) {
@@ skipping 687 matching lines @@
                      << ", " << static_cast<const void*>(transform) << ")");
   size_t count = 16;
   for (size_t ii = 0; ii < count; ++ii)
     GPU_CLIENT_LOG("value[" << ii << "]: " << transform[ii]);
   helper_->UniformMatrix4fvStreamTextureMatrixCHROMIUMImmediate(
       location, transpose, transform);
   CheckGLError();
 }
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_IMPL_AUTOGEN_H_