Re-land: cc: Implement shared worker contexts.

cc/test/layer_test_common.h

 // Copyright 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.
 
 #ifndef CC_TEST_LAYER_TEST_COMMON_H_
 #define CC_TEST_LAYER_TEST_COMMON_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "cc/quads/render_pass.h"
@@ skipping 121 matching lines @@
     }
     LayerImpl* root_layer() const { return root_layer_impl_.get(); }
     FakeLayerTreeHost* host() { return host_.get(); }
     FakeLayerTreeHostImpl* host_impl() const { return host_->host_impl(); }
     Proxy* proxy() const { return host_->host_impl()->proxy(); }
     const QuadList& quad_list() const { return render_pass_->quad_list; }
 
    private:
     FakeLayerTreeHostClient client_;
     TestTaskGraphRunner task_graph_runner_;
+    scoped_ptr<OutputSurface> output_surface_;
     scoped_ptr<FakeLayerTreeHost> host_;
     scoped_ptr<LayerImpl> root_layer_impl_;
     scoped_ptr<RenderPass> render_pass_;
     int layer_impl_id_;
   };
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_LAYER_TEST_COMMON_H_