[1/5] Pass transformed rasterization policy from Blink

cc/layers/picture_layer.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_LAYERS_PICTURE_LAYER_H_
 #define CC_LAYERS_PICTURE_LAYER_H_
 
 #include "base/macros.h"
 #include "cc/base/invalidation_region.h"
 #include "cc/debug/devtools_instrumentation.h"
@@ skipping 10 matching lines @@
  public:
   static scoped_refptr<PictureLayer> Create(ContentLayerClient* client);
 
   void ClearClient();
 
   void SetNearestNeighbor(bool nearest_neighbor);
   bool nearest_neighbor() const {
     return picture_layer_inputs_.nearest_neighbor;
   }
 
+  void SetAllowTransformedRasterization(bool allowed);
+
   // Layer interface.
   std::unique_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
   void SetLayerTreeHost(LayerTreeHost* host) override;
   void PushPropertiesTo(LayerImpl* layer) override;
   void SetNeedsDisplayRect(const gfx::Rect& layer_rect) override;
   bool Update() override;
   void SetIsMask(bool is_mask) override;
   sk_sp<SkPicture> GetPicture() const override;
 
   void SetTypeForProtoSerialization(proto::LayerNode* proto) const override;
@@ skipping 12 matching lines @@
   const DisplayItemList* GetDisplayItemList();
 
  protected:
   // Encapsulates all data, callbacks or interfaces received from the embedder.
   struct PictureLayerInputs {
     PictureLayerInputs();
     ~PictureLayerInputs();
 
     ContentLayerClient* client = nullptr;
     bool nearest_neighbor = false;
+    bool allow_transformed_rasterization = false;
     gfx::Rect recorded_viewport;
     scoped_refptr<DisplayItemList> display_list;
     size_t painter_reported_memory_usage = 0;
   };
 
   explicit PictureLayer(ContentLayerClient* client);
   // Allow tests to inject a recording source.
   PictureLayer(ContentLayerClient* client,
                std::unique_ptr<RecordingSource> source);
   ~PictureLayer() override;
 
   bool HasDrawableContent() const override;
 
   bool is_mask() const { return is_mask_; }
 
   PictureLayerInputs picture_layer_inputs_;
 
  private:
   friend class TestSerializationPictureLayer;
 
   void DropRecordingSourceContentIfInvalid();
 
+  bool UseTransformedRasterization() const;

[enne (OOO), 2017/01/03 22:53:01]

style nit: maybe this should be "ShouldUseTransformedRasterization".  Use sounds
like a verb (to start using it) here rather than a query about whether it should
be used.

+
   std::unique_ptr<RecordingSource> recording_source_;
   devtools_instrumentation::
       ScopedLayerObjectTracker instrumentation_object_tracker_;
 
   Region last_updated_invalidation_;
 
   int update_source_frame_number_;
   bool is_mask_;
 
   DISALLOW_COPY_AND_ASSIGN(PictureLayer);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_PICTURE_LAYER_H_