Re-land: cc: Examine layers to determine if we're ready to activate.

cc/test/fake_tile_manager.h

Index: cc/test/fake_tile_manager.h
diff --git a/cc/test/fake_tile_manager.h b/cc/test/fake_tile_manager.h
index c5c7a2587872695271a0e355a762ee319bae2377..05dbe6121f11c95652387954b0b6d9bab2ffb80c 100644
--- a/cc/test/fake_tile_manager.h
+++ b/cc/test/fake_tile_manager.h
@@ -16,9 +16,6 @@ class FakeTileManager : public TileManager {
  public:
   explicit FakeTileManager(TileManagerClient* client);
   FakeTileManager(TileManagerClient* client, ResourcePool* resource_pool);
-  FakeTileManager(TileManagerClient* client,
-                  ResourcePool* resource_pool,
-                  bool allow_on_demand_raster);
   virtual ~FakeTileManager();
 
   bool HasBeenAssignedMemory(Tile* tile);