Add ContextMenuSourceType to views::ContextMenuController::ShowContextMenuForView.

ash/shell/window_type_launcher.h

Index: ash/shell/window_type_launcher.h
diff --git a/ash/shell/window_type_launcher.h b/ash/shell/window_type_launcher.h
index de2159ebc44b1de744338879bc15ae072c94bf89..29d703d115d6315329f514adb8085b5e39fe4346 100644
--- a/ash/shell/window_type_launcher.h
+++ b/ash/shell/window_type_launcher.h
@@ -61,7 +61,8 @@ class WindowTypeLauncher : public views::WidgetDelegateView,
 
   // Override from views::ContextMenuController:
   virtual void ShowContextMenuForView(views::View* source,
-                                      const gfx::Point& point) OVERRIDE;
+                                      const gfx::Point& point,
+                                      ui::MenuSourceType source_type) OVERRIDE;
 #endif  // !defined(OS_MACOSX)
 
   views::LabelButton* create_button_;