Offset scissor and viewport when using SetDrawRectangle on surface.

gpu/command_buffer/service/gles2_cmd_decoder_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 2600 matching lines @@
   if (height < 0) {
     LOCAL_SET_GL_ERROR(GL_INVALID_VALUE, "glScissor", "height < 0");
     return error::kNoError;
   }
   if (state_.scissor_x != x || state_.scissor_y != y ||
       state_.scissor_width != width || state_.scissor_height != height) {
     state_.scissor_x = x;
     state_.scissor_y = y;
     state_.scissor_width = width;
     state_.scissor_height = height;
-    glScissor(x, y, width, height);
+    DoScissor(x, y, width, height);
   }
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandleShaderSourceBucket(
     uint32_t immediate_data_size,
     const volatile void* cmd_data) {
   const volatile gles2::cmds::ShaderSourceBucket& c =
       *static_cast<const volatile gles2::cmds::ShaderSourceBucket*>(cmd_data);
   GLuint shader = static_cast<GLuint>(c.shader);
@@ skipping 2651 matching lines @@
         state_.enable_flags.cached_sample_alpha_to_one_ext = enabled;
         return true;
       }
       return false;
     default:
       NOTREACHED();
       return false;
   }
 }
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_AUTOGEN_H_