Drag-and-drop across OOPIFs.

third_party/WebKit/Source/core/page/DragController.h

Index: third_party/WebKit/Source/core/page/DragController.h
diff --git a/third_party/WebKit/Source/core/page/DragController.h b/third_party/WebKit/Source/core/page/DragController.h
index 3b0aef7b6fc00c21a0e6ee3844c119b3f2ca72ea..88b50237db01571c8c014a973e9bfb84fb39dd1a 100644
--- a/third_party/WebKit/Source/core/page/DragController.h
+++ b/third_party/WebKit/Source/core/page/DragController.h
@@ -56,9 +56,9 @@ class CORE_EXPORT DragController final
  public:
   static DragController* create(Page*);
 
-  DragSession dragEnteredOrUpdated(DragData*);
-  void dragExited(DragData*);
-  bool performDrag(DragData*);
+  DragSession dragEnteredOrUpdated(DragData*, LocalFrame* localRoot);
+  void dragExited(DragData*, LocalFrame* localRoot);
+  bool performDrag(DragData*, LocalFrame* localRoot);
 
   enum SelectionDragPolicy {
     ImmediateSelectionDragResolution,
@@ -85,11 +85,14 @@ class CORE_EXPORT DragController final
   DragController(Page*);
 
   DispatchEventResult dispatchTextInputEventFor(LocalFrame*, DragData*);
-  bool canProcessDrag(DragData*);
+  bool canProcessDrag(DragData*, LocalFrame*);
   bool concludeEditDrag(DragData*);
-  DragOperation operationForLoad(DragData*);
-  bool tryDocumentDrag(DragData*, DragDestinationAction, DragSession&);
-  bool tryDHTMLDrag(DragData*, DragOperation&);
+  DragOperation operationForLoad(DragData*, LocalFrame* localRoot);

[dcheng, 2016/11/17 18:02:58]

Let's be consistent about naming (or not naming this parameter). Probably we
should name it, since it's implied that it's the local root?

[paulmeyer, 2016/11/17 20:22:25]

Done.

+  bool tryDocumentDrag(DragData*,
+                       DragDestinationAction,
+                       DragSession&,
+                       LocalFrame*);
+  bool tryDHTMLDrag(DragData*, DragOperation&, LocalFrame*);
   DragOperation dragOperation(DragData*);
   void cancelDrag();
   bool dragIsMove(FrameSelection&, DragData*);