Use sk_sp-based picture recording APIs

cc/blink/web_display_item_list_impl.h

Index: cc/blink/web_display_item_list_impl.h
diff --git a/cc/blink/web_display_item_list_impl.h b/cc/blink/web_display_item_list_impl.h
index 17e58d538e0a7cf3b0505dd8c4e7bf1e93768037..a54ac0e47f6e5cffc34c7f557b25bd6e2ae2e113 100644
--- a/cc/blink/web_display_item_list_impl.h
+++ b/cc/blink/web_display_item_list_impl.h
@@ -42,7 +42,8 @@ class WebDisplayItemListImpl : public blink::WebDisplayItemList {
   ~WebDisplayItemListImpl() override;
 
   // blink::WebDisplayItemList implementation.
-  void appendDrawingItem(const blink::WebRect&, const SkPicture*) override;
+  void appendDrawingItem(const blink::WebRect&,
+                         sk_sp<const SkPicture>) override;

[reed1, 2016/03/21 13:07:55]

At some point it will be awkward to still have some 'const picture' when skia is
definitely moving to just 'picture'.

[f(malita), 2016/03/21 14:27:49]

Yup, there's a de-constification CL on my todo list.  That'll be part of
switching to the sk_sp drawing API (which takes non-const picture sksps).

   void appendClipItem(
       const blink::WebRect& visual_rect,
       const blink::WebRect& clip_rect,