cc: Make Picture/PicturePile handle recording/raster

cc/picture_layer_impl.h

Index: cc/picture_layer_impl.h
diff --git a/cc/picture_layer_impl.h b/cc/picture_layer_impl.h
index 53ecec1f0953a9d742e41375744522ed0c61ec9a..e2c7675bdf7e5593e1dfada4958428ec631a3f15 100644
--- a/cc/picture_layer_impl.h
+++ b/cc/picture_layer_impl.h
@@ -10,6 +10,9 @@
 
 namespace cc {
 
+struct AppendQuadsData;
+class QuadSink;
+
 class CC_EXPORT PictureLayerImpl : public LayerImpl {
 public:
   static scoped_ptr<PictureLayerImpl> create(int id)
@@ -18,6 +21,11 @@ public:
   }
   virtual ~PictureLayerImpl();
 
+  // LayerImpl overrides.
+  virtual const char* layerTypeAsString() const OVERRIDE;
+  virtual void appendQuads(QuadSink&, AppendQuadsData&) OVERRIDE;
+  virtual void dumpLayerProperties(std::string*, int indent) const OVERRIDE;
+
 protected:
   PictureLayerImpl(int id);