Revert of cc: Remove use of PassAs() and constructor-casting with scoped_ptr.

cc/resources/tile_manager_unittest.cc

Index: cc/resources/tile_manager_unittest.cc
diff --git a/cc/resources/tile_manager_unittest.cc b/cc/resources/tile_manager_unittest.cc
index 3fb5b134c4bbd9c4be8612e3424e8aae0d4586c3..41c15cda5518f3033fdb649f4558fe901c2c0ec3 100644
--- a/cc/resources/tile_manager_unittest.cc
+++ b/cc/resources/tile_manager_unittest.cc
@@ -520,7 +520,8 @@
   }
 
   virtual void InitializeRenderer() {
-    host_impl_.InitializeRenderer(FakeOutputSurface::Create3d());
+    host_impl_.InitializeRenderer(
+        FakeOutputSurface::Create3d().PassAs<OutputSurface>());
   }
 
   void SetupDefaultTrees(const gfx::Size& layer_bounds) {
@@ -565,7 +566,7 @@
     scoped_ptr<FakePictureLayerImpl> pending_layer =
         FakePictureLayerImpl::CreateWithPile(pending_tree, id_, pile);
     pending_layer->SetDrawsContent(true);
-    pending_tree->SetRootLayer(pending_layer.Pass());
+    pending_tree->SetRootLayer(pending_layer.PassAs<LayerImpl>());
 
     pending_layer_ = static_cast<FakePictureLayerImpl*>(
         host_impl_.pending_tree()->LayerById(id_));
@@ -940,7 +941,7 @@
   scoped_ptr<FakePictureLayerImpl> pending_child =
       FakePictureLayerImpl::CreateWithPile(
           host_impl_.pending_tree(), 2, pending_pile);
-  pending_layer_->AddChild(pending_child.Pass());
+  pending_layer_->AddChild(pending_child.PassAs<LayerImpl>());
 
   FakePictureLayerImpl* pending_child_layer =
       static_cast<FakePictureLayerImpl*>(pending_layer_->children()[0]);
@@ -1073,7 +1074,7 @@
     pending_layer->SetDrawsContent(true);
     pending_layer->DoPostCommitInitializationIfNeeded();
     pending_layer->set_has_valid_tile_priorities(true);
-    pending_layer_->AddChild(pending_layer.Pass());
+    pending_layer_->AddChild(pending_layer.PassAs<LayerImpl>());
   }
 
   host_impl_.BuildRasterQueue(&queue, SAME_PRIORITY_FOR_BOTH_TREES);
@@ -1122,7 +1123,7 @@
     pending_layer->SetDrawsContent(true);
     pending_layer->DoPostCommitInitializationIfNeeded();
     pending_layer->set_has_valid_tile_priorities(true);
-    pending_layer_->AddChild(pending_layer.Pass());
+    pending_layer_->AddChild(pending_layer.PassAs<LayerImpl>());
   }
 
   host_impl_.BuildEvictionQueue(&queue, SAME_PRIORITY_FOR_BOTH_TREES);