Revert of cc: Implement shared worker contexts.

cc/layers/picture_image_layer_impl_unittest.cc

Index: cc/layers/picture_image_layer_impl_unittest.cc
diff --git a/cc/layers/picture_image_layer_impl_unittest.cc b/cc/layers/picture_image_layer_impl_unittest.cc
index 01ad1f308443ea68f0c0e3e4e67698a3de18e0d1..2a9dda710db53b5cb2a8712e6e44bc76e947d10e 100644
--- a/cc/layers/picture_image_layer_impl_unittest.cc
+++ b/cc/layers/picture_image_layer_impl_unittest.cc
@@ -43,13 +43,12 @@
  public:
   PictureImageLayerImplTest()
       : proxy_(base::ThreadTaskRunnerHandle::Get()),
-        output_surface_(FakeOutputSurface::Create3d()),
         host_impl_(PictureLayerImplImageTestSettings(),
                    &proxy_,
                    &shared_bitmap_manager_,
                    &task_graph_runner_) {
     host_impl_.CreatePendingTree();
-    host_impl_.InitializeRenderer(output_surface_.get());
+    host_impl_.InitializeRenderer(FakeOutputSurface::Create3d());
   }
 
   scoped_ptr<TestablePictureImageLayerImpl> CreateLayer(int id,
@@ -94,7 +93,6 @@
   FakeImplProxy proxy_;
   TestSharedBitmapManager shared_bitmap_manager_;
   TestTaskGraphRunner task_graph_runner_;
-  scoped_ptr<OutputSurface> output_surface_;
   FakeLayerTreeHostImpl host_impl_;
 };