cc: Consider visible rect for update tile priority early out.

cc/resources/picture_layer_tiling.h

Index: cc/resources/picture_layer_tiling.h
diff --git a/cc/resources/picture_layer_tiling.h b/cc/resources/picture_layer_tiling.h
index a12b1d2721924988da06a9a9421f8363283c2d08..1b2b219eecfa570b5c5818f62083bee5e245c022 100644
--- a/cc/resources/picture_layer_tiling.h
+++ b/cc/resources/picture_layer_tiling.h
@@ -262,10 +262,6 @@ class CC_EXPORT PictureLayerTiling {
                                 double current_frame_time_in_seconds,
                                 const Occlusion& occlusion_in_layer_space);
 
-  bool NeedsUpdateForFrameAtTime(double frame_time_in_seconds) {
-    return frame_time_in_seconds != last_impl_frame_time_in_seconds_;
-  }
-
   void GetAllTilesForTracing(std::set<const Tile*>* tiles) const;
   void AsValueInto(base::debug::TracedValue* array) const;
   size_t GPUMemoryUsageInBytes() const;