[Win] App launcher drag/drop.

ui/app_list/apps_grid_view_delegate.h

Index: ui/app_list/apps_grid_view_delegate.h
diff --git a/ui/app_list/apps_grid_view_delegate.h b/ui/app_list/apps_grid_view_delegate.h
index 90a892b9b767803a9ec1e3ab65f46af5e4ce4b5a..59dc8f66fb262903b2e3b9b08fcf839f7359872e 100644
--- a/ui/app_list/apps_grid_view_delegate.h
+++ b/ui/app_list/apps_grid_view_delegate.h
@@ -5,8 +5,13 @@
 #ifndef UI_APP_LIST_APPS_GRID_VIEW_DELEGATE_H_
 #define UI_APP_LIST_APPS_GRID_VIEW_DELEGATE_H_
 
+#include "base/callback_forward.h"
 #include "ui/app_list/app_list_export.h"
 
+namespace base {
+class FilePath;
+}
+
 namespace app_list {
 
 class AppListItemModel;
@@ -17,6 +22,12 @@ class APP_LIST_EXPORT AppsGridViewDelegate {
   // the flags of the keyboard/mouse event that triggers the activation request.
   virtual void ActivateApp(AppListItemModel* item, int event_flags) = 0;
 
+  // Gets the path to a shortcut for the app represented by |item|. |callback|
+  // may be run immediately.
+  virtual void GetShortcutPathForApp(
+      const std::string& app_id,
+      const base::Callback<void(const base::FilePath&)>& callback) = 0;
+
  protected:
   virtual ~AppsGridViewDelegate() {}
 };