Fixing tile grid size used by cc:Picture to make it respect current tile configuration

cc/picture_pile_base.h

Index: cc/picture_pile_base.h
diff --git a/cc/picture_pile_base.h b/cc/picture_pile_base.h
index 35c1f300cb2b0db2ce54cbd25bc60d2e5908e83b..798498e350fc03d7c208c08c25a627bf89226981 100644
--- a/cc/picture_pile_base.h
+++ b/cc/picture_pile_base.h
@@ -25,6 +25,7 @@ class CC_EXPORT PicturePileBase : public base::RefCounted<PicturePileBase> {
   void Resize(gfx::Size size);
   gfx::Size size() const { return tiling_.total_size(); }
   void SetMinContentsScale(float min_contents_scale);
+  void SetTileGridStride(gfx::Size tile_grid_stride);
 
   void PushPropertiesTo(PicturePileBase* other);
 
@@ -52,6 +53,7 @@ class CC_EXPORT PicturePileBase : public base::RefCounted<PicturePileBase> {
   TilingData tiling_;
   Region recorded_region_;
   float min_contents_scale_;
+  gfx::Size tile_grid_stride_;
 
  private:
   void SetBufferPixels(int buffer_pixels);