Drag and drop between app list and launcher - First patch

ui/app_list/views/app_list_view.h

Index: ui/app_list/views/app_list_view.h
diff --git a/ui/app_list/views/app_list_view.h b/ui/app_list/views/app_list_view.h
index 486dfcef3ab824f0c9889aa6e3009ea365b4749c..eb21ceb3ed654417e46415704c500405ec5e046e 100644
--- a/ui/app_list/views/app_list_view.h
+++ b/ui/app_list/views/app_list_view.h
@@ -15,7 +15,7 @@ class Widget;
 }
 
 namespace app_list {
-
+class ApplicationDragAndDropHost;
 class AppListMainView;
 class AppListModel;
 class AppListViewDelegate;
@@ -44,6 +44,13 @@ class APP_LIST_EXPORT AppListView : public views::BubbleDelegateView,
 
   void SetAnchorPoint(const gfx::Point& anchor_point);
 
+  // If |drag_and_drop_host| is not NULL it will be called upon drag and drop
+  // operations outside the application list. This has to be called after
+  // InitAsBubble was called since the app list object needs to exist so that
+  // it can set the host.
+  void SetDragAndDropHostOfCurrentAppList(
+      app_list::ApplicationDragAndDropHost* drag_and_drop_host);
+
   // Shows the UI when there are no pending icon loads. Otherwise, starts a
   // timer to show the UI when a maximum allowed wait time has expired.
   void ShowWhenReady();