cc: Make IsReadyToDraw/NeedsRaster usage consistent.

cc/resources/tile.h

Index: cc/resources/tile.h
diff --git a/cc/resources/tile.h b/cc/resources/tile.h
index 4935cbc91a00a6a820c6fab55e80eaf5916b5169..c15c848a194b34d6eebfa10bb7a0608b99a0a036 100644
--- a/cc/resources/tile.h
+++ b/cc/resources/tile.h
@@ -45,18 +45,9 @@ class CC_EXPORT Tile {
     return !!(flags_ & USE_PICTURE_ANALYSIS);
   }
 
-  bool HasResource() const { return draw_info_.has_resource(); }
-  bool NeedsRaster() const {
-    return draw_info_.mode() == TileDrawInfo::OOM_MODE ||
-           !draw_info_.IsReadyToDraw();
-  }
-
   void AsValueInto(base::trace_event::TracedValue* value) const;
 
-  inline bool IsReadyToDraw() const { return draw_info_.IsReadyToDraw(); }
-
   const TileDrawInfo& draw_info() const { return draw_info_; }
-
   TileDrawInfo& draw_info() { return draw_info_; }
 
   float contents_scale() const { return contents_scale_; }