Drag and drop between app list and launcher - First patch

ash/shell.h

Index: ash/shell.h
diff --git a/ash/shell.h b/ash/shell.h
index e644d2af25619be170061ae286c22e093c44363f..71c0447cac1b960e9dd4368e46a975296a306742 100644
--- a/ash/shell.h
+++ b/ash/shell.h
@@ -26,6 +26,9 @@
 
 class CommandLine;
 
+namespace app_list {
+class ApplicationDnDHost;
+}
 namespace aura {
 class EventFilter;
 class RootWindow;
@@ -211,6 +214,10 @@ class ASH_EXPORT Shell
   // will be used.
   void ToggleAppList(aura::Window* anchor);
 
+  // If |dnd_host| is not NULL it will be called upon drag and drop operations
+  // outside the application list.
+  void SetAppListDnDHost(app_list::ApplicationDnDHost* dnd_host);
+
   // Returns app list target visibility.
   bool GetAppListTargetVisibility() const;