Update from chromium https://crrev.com/301725/

cc/layers/picture_layer.cc

Index: cc/layers/picture_layer.cc
diff --git a/cc/layers/picture_layer.cc b/cc/layers/picture_layer.cc
index 4d44f00b774a3d7ee1b57f5c7dcbcaeb3cdbe2fd..6e5ba79bc4bb3abb93053dcb033fdbe9b662182c 100644
--- a/cc/layers/picture_layer.cc
+++ b/cc/layers/picture_layer.cc
@@ -19,7 +19,6 @@ scoped_refptr<PictureLayer> PictureLayer::Create(ContentLayerClient* client) {
 
 PictureLayer::PictureLayer(ContentLayerClient* client)
     : client_(client),
-      pile_(make_scoped_refptr(new PicturePile())),
       instrumentation_object_tracker_(id()),
       update_source_frame_number_(-1),
       can_use_lcd_text_last_frame_(can_use_lcd_text()) {
@@ -40,29 +39,29 @@ void PictureLayer::PushPropertiesTo(LayerImpl* base_layer) {
     // Update may not get called for an empty layer, so resize here instead.
     // Using layer_impl because either bounds() or paint_properties().bounds
     // may disagree and either one could have been pushed to layer_impl.
-    pile_->SetEmptyBounds();
+    pile_.SetEmptyBounds();
   } else {
     // If update called, then pile size must match bounds pushed to impl layer.
     DCHECK_IMPLIES(
         update_source_frame_number_ == layer_tree_host()->source_frame_number(),
-        layer_impl->bounds().ToString() == pile_->tiling_size().ToString());
+        layer_impl->bounds().ToString() == pile_.tiling_size().ToString());
   }
 
   // Unlike other properties, invalidation must always be set on layer_impl.
   // See PictureLayerImpl::PushPropertiesTo for more details.
   layer_impl->invalidation_.Clear();
   layer_impl->invalidation_.Swap(&pile_invalidation_);
-  layer_impl->pile_ = PicturePileImpl::CreateFromOther(pile_.get());
+  layer_impl->pile_ = PicturePileImpl::CreateFromOther(&pile_);
 }
 
 void PictureLayer::SetLayerTreeHost(LayerTreeHost* host) {
   Layer::SetLayerTreeHost(host);
   if (host) {
-    pile_->SetMinContentsScale(host->settings().minimum_contents_scale);
-    pile_->SetTileGridSize(host->settings().default_tile_grid_size);
-    pile_->set_slow_down_raster_scale_factor(
+    pile_.SetMinContentsScale(host->settings().minimum_contents_scale);
+    pile_.SetTileGridSize(host->settings().default_tile_grid_size);
+    pile_.set_slow_down_raster_scale_factor(
         host->debug_state().slow_down_raster_scale_factor);
-    pile_->set_show_debug_picture_borders(
+    pile_.set_show_debug_picture_borders(
         host->debug_state().show_picture_borders);
   }
 }
@@ -92,7 +91,7 @@ bool PictureLayer::Update(ResourceUpdateQueue* queue,
   gfx::Size layer_size = paint_properties().bounds;
 
   if (last_updated_visible_content_rect_ == visible_content_rect() &&
-      pile_->tiling_size() == layer_size && pending_invalidation_.IsEmpty()) {
+      pile_.tiling_size() == layer_size && pending_invalidation_.IsEmpty()) {
     // Only early out if the visible content rect of this layer hasn't changed.
     return updated;
   }
@@ -120,16 +119,16 @@ bool PictureLayer::Update(ResourceUpdateQueue* queue,
   // for them.
   DCHECK(client_);
   updated |=
-      pile_->UpdateAndExpandInvalidation(client_,
-                                         &pile_invalidation_,
-                                         SafeOpaqueBackgroundColor(),
-                                         contents_opaque(),
-                                         client_->FillsBoundsCompletely(),
-                                         layer_size,
-                                         visible_layer_rect,
-                                         update_source_frame_number_,
-                                         Picture::RECORD_NORMALLY,
-                                         rendering_stats_instrumentation());
+      pile_.UpdateAndExpandInvalidation(client_,
+                                        &pile_invalidation_,
+                                        SafeOpaqueBackgroundColor(),
+                                        contents_opaque(),
+                                        client_->FillsBoundsCompletely(),
+                                        layer_size,
+                                        visible_layer_rect,
+                                        update_source_frame_number_,
+                                        Picture::RECORD_NORMALLY,
+                                        rendering_stats_instrumentation());
   last_updated_visible_content_rect_ = visible_content_rect();
 
   if (updated) {
@@ -144,7 +143,7 @@ bool PictureLayer::Update(ResourceUpdateQueue* queue,
 }
 
 void PictureLayer::SetIsMask(bool is_mask) {
-  pile_->set_is_mask(is_mask);
+  pile_.set_is_mask(is_mask);
 }
 
 bool PictureLayer::SupportsLCDText() const {
@@ -180,7 +179,7 @@ skia::RefPtr<SkPicture> PictureLayer::GetPicture() const {
 }
 
 bool PictureLayer::IsSuitableForGpuRasterization() const {
-  return pile_->is_suitable_for_gpu_rasterization();
+  return pile_.is_suitable_for_gpu_rasterization();
 }
 
 void PictureLayer::ClearClient() {