CC: Plumb LayerSettings parameter for cc::Layer construction.

cc/test/layer_tree_host_common_test.h

Index: cc/test/layer_tree_host_common_test.h
diff --git a/cc/test/layer_tree_host_common_test.h b/cc/test/layer_tree_host_common_test.h
index 9fdd1a939319e43d1ce8e2f83c35ff946647957e..ec774348005989abf7c7fa57ec65313bb0722d25 100644
--- a/cc/test/layer_tree_host_common_test.h
+++ b/cc/test/layer_tree_host_common_test.h
@@ -10,6 +10,7 @@
 #include "base/memory/scoped_ptr.h"
 #include "cc/layers/layer_lists.h"
 #include "cc/test/fake_layer_tree_host_client.h"
+#include "cc/trees/layer_tree_settings.h"
 #include "cc/trees/property_tree.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -122,9 +123,12 @@ class LayerTreeHostCommonTestBase {
 
   scoped_ptr<FakeLayerTreeHost> CreateFakeLayerTreeHost();
 
+  const LayerSettings& layer_settings() { return layer_settings_; }
+
  private:
   scoped_ptr<RenderSurfaceLayerList> render_surface_layer_list_;
   scoped_ptr<std::vector<LayerImpl*>> render_surface_layer_list_impl_;
+  LayerSettings layer_settings_;
 
   FakeLayerTreeHostClient client_;
   int render_surface_layer_list_count_;