Drag-and-drop: Target drag messages to specific RenderWidgets.

content/browser/web_contents/web_contents_view_mus.h

Index: content/browser/web_contents/web_contents_view_mus.h
diff --git a/content/browser/web_contents/web_contents_view_mus.h b/content/browser/web_contents/web_contents_view_mus.h
index 99cc74698549e735bfacfe4267d01af63dcc22a0..f47f8e3bf3c2e123061a75f222d48140854c9e33 100644
--- a/content/browser/web_contents/web_contents_view_mus.h
+++ b/content/browser/web_contents/web_contents_view_mus.h
@@ -20,6 +20,7 @@
 
 namespace content {
 
+class RenderWidgetHostImpl;
 class WebContents;
 class WebContentsImpl;
 class WebContentsViewDelegate;
@@ -80,7 +81,8 @@ class WebContentsViewMus : public WebContentsView,
                      blink::WebDragOperationsMask allowed_ops,
                      const gfx::ImageSkia& image,
                      const gfx::Vector2d& image_offset,
-                     const DragEventSourceInfo& event_info) override;
+                     const DragEventSourceInfo& event_info,
+                     RenderWidgetHostImpl* source_rwh) override;
   void UpdateDragCursor(blink::WebDragOperation operation) override;
   void GotFocus() override;
   void TakeFocus(bool reverse) override;