Added Launcher_SwitchTask UMA user action.

ash/test/shelf_view_test_api.h

Index: ash/test/shelf_view_test_api.h
diff --git a/ash/test/shelf_view_test_api.h b/ash/test/shelf_view_test_api.h
index 7916ea766eea04b9731fa2ac592f4b998a6138e9..04e5d404b58ff17f3d15d8f35dcf04eb4c699d7b 100644
--- a/ash/test/shelf_view_test_api.h
+++ b/ash/test/shelf_view_test_api.h
@@ -5,6 +5,7 @@
 #ifndef ASH_TEST_SHELF_VIEW_TEST_API_H_
 #define ASH_TEST_SHELF_VIEW_TEST_API_H_
 
+#include "ash/shelf/shelf_item_delegate.h"
 #include "ash/shelf/shelf_item_types.h"
 #include "base/basictypes.h"
 
@@ -81,6 +82,14 @@ class ShelfViewTestAPI {
   // Wrapper for ShelfView::ButtonPressed.
   void ButtonPressed(views::Button* sender, const ui::Event& event);
 
+  // Wrapper for ShelfView::RecordIconActivatedSource(const ui::Event&).
+  void RecordIconActivatedSource(const ui::Event& event);
+
+  // Wrapper for ShelfView::RecordIconActivatedAction(
+  // ShelfItemDelegate::PerformedAction).
+  void RecordIconActivatedAction(
+      ShelfItemDelegate::PerformedAction performed_action);
+
   // Wrapper for ShelfView::SameDragType.
   bool SameDragType(ShelfItemType typea, ShelfItemType typeb) const;