Merge from Chromium at DEPS revision r207203

This commit was generated by merge_to_master.py.

Change-Id: I5fbb6854d092096c4d39edc2865a48be1b53c418
diff --git a/ash/shell.h b/ash/shell.h
index a420293..f8649dc 100644
--- a/ash/shell.h
+++ b/ash/shell.h
@@ -19,6 +19,7 @@
 #include "base/observer_list.h"
 #include "ui/aura/client/activation_change_observer.h"
 #include "ui/base/events/event_target.h"
+#include "ui/base/ui_base_types.h"
 #include "ui/gfx/insets.h"
 #include "ui/gfx/screen.h"
 #include "ui/gfx/size.h"
@@ -211,7 +212,8 @@
 
   // Shows the context menu for the background and launcher at
   // |location_in_screen| (in screen coordinates).
-  void ShowContextMenu(const gfx::Point& location_in_screen);
+  void ShowContextMenu(const gfx::Point& location_in_screen,
+                       ui::MenuSourceType source_type);
 
   // Toggles the app list. |window| specifies in which display the app
   // list should be shown. If this is NULL, the active root window