Call scoped_refptr<T>::get() rather than relying on implicit "operator T*"

cc/trees/layer_tree_host_unittest_scroll.cc

Index: cc/trees/layer_tree_host_unittest_scroll.cc
diff --git a/cc/trees/layer_tree_host_unittest_scroll.cc b/cc/trees/layer_tree_host_unittest_scroll.cc
index febf23f3e9891729d9b96150e7e282a4ac848b32..cd7868e5cd6081b0f9f35a08fd518f60b2e412dd 100644
--- a/cc/trees/layer_tree_host_unittest_scroll.cc
+++ b/cc/trees/layer_tree_host_unittest_scroll.cc
@@ -762,9 +762,9 @@ class LayerTreeHostScrollTestLayerStructureChange
     scoped_refptr<Layer> root_layer = Layer::Create();
     root_layer->SetBounds(gfx::Size(10, 10));
 
-    Layer* root_scroll_layer = CreateScrollLayer(root_layer,
-        &root_scroll_layer_client_);
-    CreateScrollLayer(root_layer, &sibling_scroll_layer_client_);
+    Layer* root_scroll_layer =
+        CreateScrollLayer(root_layer.get(), &root_scroll_layer_client_);
+    CreateScrollLayer(root_layer.get(), &sibling_scroll_layer_client_);
     CreateScrollLayer(root_scroll_layer, &child_scroll_layer_client_);
 
     layer_tree_host()->SetRootLayer(root_layer);
@@ -822,7 +822,7 @@ class LayerTreeHostScrollTestLayerStructureChange
     scroll_layer->SetMaxScrollOffset(gfx::Vector2d(100, 100));
     scroll_layer->set_layer_scroll_client(client);
     client->owner_ = this;
-    client->layer_ = scroll_layer;
+    client->layer_ = scroll_layer.get();
     parent->AddChild(scroll_layer);
     return scroll_layer.get();
   }