Raster PictureLayerTiling with fractional translation

cc/tiles/picture_layer_tiling_set.h

Index: cc/tiles/picture_layer_tiling_set.h
diff --git a/cc/tiles/picture_layer_tiling_set.h b/cc/tiles/picture_layer_tiling_set.h
index 608c43c2ba3850429969f3e06fa21a228deedd32..82153e31501f372835e2c7496d636b69873e1efc 100644
--- a/cc/tiles/picture_layer_tiling_set.h
+++ b/cc/tiles/picture_layer_tiling_set.h
@@ -80,7 +80,7 @@ class CC_EXPORT PictureLayerTilingSet {
 
   void UpdateTilingsForImplSideInvalidation(const Region& layer_invalidation);
 
-  PictureLayerTiling* AddTiling(float contents_scale,
+  PictureLayerTiling* AddTiling(const ScaleTranslate2d& raster_transform,
                                 scoped_refptr<RasterSource> raster_source);
   size_t num_tilings() const { return tilings_.size(); }
   int NumHighResTilings() const;
@@ -107,6 +107,9 @@ class CC_EXPORT PictureLayerTilingSet {
   // the aspect ratio.
   float GetMaximumContentsScale() const;
 
+  // Remove one tiling.
+  void Remove(PictureLayerTiling* tiling);
+
   // Removes all tilings with a contents scale key < |minimum_scale_key|.
   void RemoveTilingsBelowScaleKey(float minimum_scale_key);
 
@@ -226,8 +229,6 @@ class CC_EXPORT PictureLayerTilingSet {
       scoped_refptr<RasterSource> raster_source,
       const Region& layer_invalidation);
 
-  // Remove one tiling.
-  void Remove(PictureLayerTiling* tiling);
   void VerifyTilings(const PictureLayerTilingSet* pending_twin_set) const;
 
   bool TilingsNeedUpdate(const gfx::Rect& required_rect_in_layer_space,