c:: Give the raster source to the PictureLayerTilings.

cc/layers/picture_layer_impl.cc

Index: cc/layers/picture_layer_impl.cc
diff --git a/cc/layers/picture_layer_impl.cc b/cc/layers/picture_layer_impl.cc
index 6778512f5468071ba8c0119cc84f9c9ee5dbb98d..cac7b4a4308712bfc472d3babbe4b1598a2b4364 100644
--- a/cc/layers/picture_layer_impl.cc
+++ b/cc/layers/picture_layer_impl.cc
@@ -638,12 +638,9 @@ skia::RefPtr<SkPicture> PictureLayerImpl::GetPicture() {
   return raster_source_->GetFlattenedPicture();
 }
 
-scoped_refptr<Tile> PictureLayerImpl::CreateTile(PictureLayerTiling* tiling,
-                                               const gfx::Rect& content_rect) {
-  DCHECK(!raster_source_->IsSolidColor());
-  if (!raster_source_->CoversRect(content_rect, tiling->contents_scale()))
-    return scoped_refptr<Tile>();
-
+scoped_refptr<Tile> PictureLayerImpl::CreateTile(
+    float contents_scale,
+    const gfx::Rect& content_rect) {
   int flags = 0;
 
   // We don't handle solid color masks, so we shouldn't bother analyzing those.
@@ -652,9 +649,8 @@ scoped_refptr<Tile> PictureLayerImpl::CreateTile(PictureLayerTiling* tiling,
     flags = Tile::USE_PICTURE_ANALYSIS;
 
   return layer_tree_impl()->tile_manager()->CreateTile(
-      raster_source_.get(), content_rect.size(), content_rect,
-      tiling->contents_scale(), id(), layer_tree_impl()->source_frame_number(),
-      flags);
+      raster_source_.get(), content_rect.size(), content_rect, contents_scale,
+      id(), layer_tree_impl()->source_frame_number(), flags);
 }
 
 const Region* PictureLayerImpl::GetPendingInvalidation() {
@@ -818,7 +814,7 @@ PictureLayerTiling* PictureLayerImpl::AddTiling(float contents_scale) {
   DCHECK_GE(contents_scale, MinimumContentsScale());
   DCHECK_LE(contents_scale, MaximumContentsScale());
   DCHECK(raster_source_->HasRecordings());
-  return tilings_->AddTiling(contents_scale, raster_source_->GetSize());
+  return tilings_->AddTiling(contents_scale, raster_source_);
 }
 
 void PictureLayerImpl::RemoveAllTilings() {