cc: Make IsReadyToDraw/NeedsRaster usage consistent.

cc/resources/tile.h

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_RESOURCES_TILE_H_
 #define CC_RESOURCES_TILE_H_
 
 #include "base/memory/ref_counted.h"
 #include "cc/resources/tile_draw_info.h"
 #include "ui/gfx/geometry/rect.h"
@@ skipping 27 matching lines @@
   }
   bool required_for_draw() const { return required_for_draw_; }
   void set_required_for_draw(bool is_required) {
     required_for_draw_ = is_required;
   }
 
   bool use_picture_analysis() const {
     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_; }
   gfx::Rect content_rect() const { return content_rect_; }
 
   int layer_id() const { return layer_id_; }
 
   int source_frame_number() const { return source_frame_number_; }
 
   size_t GPUMemoryUsageInBytes() const;
@@ skipping 47 matching lines @@
   scoped_refptr<RasterTask> raster_task_;
 
   DISALLOW_COPY_AND_ASSIGN(Tile);
 };
 
 using ScopedTilePtr = scoped_ptr<Tile, Tile::Deleter>;
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_TILE_H_