gpu: Pepper3DImageChromium support on ChromeOS.

gpu/command_buffer/service/gles2_cmd_decoder.cc

 // Copyright (c) 2012 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.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 #include <limits.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <stdio.h>
@@ skipping 3109 matching lines @@
   should_use_native_gmb_for_backbuffer_ =
       attrib_helper.should_use_native_gmb_for_backbuffer;
   if (should_use_native_gmb_for_backbuffer_) {
     gpu::ImageFactory* image_factory = group_->image_factory();
     bool supported = false;
     if (image_factory) {
       switch (image_factory->RequiredTextureType()) {
         case GL_TEXTURE_RECTANGLE_ARB:
           supported = feature_info_->feature_flags().arb_texture_rectangle;
           break;
+        case GL_TEXTURE_EXTERNAL_OES:
+          supported = feature_info_->feature_flags().oes_egl_image_external;
+          break;
         case GL_TEXTURE_2D:
           supported = true;
           break;
         default:
           break;
       }
     }
 
     if (!supported) {
       Destroy(true);
@@ skipping 15993 matching lines @@
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "base/macros.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu