Auto hide app list on Windows when it loses focus.

chrome/browser/ui/app_list/app_list_view_delegate.h

Index: chrome/browser/ui/app_list/app_list_view_delegate.h
diff --git a/chrome/browser/ui/app_list/app_list_view_delegate.h b/chrome/browser/ui/app_list/app_list_view_delegate.h
index 4d5eed7ab13e9209f3cbfc03e5d8ac7c3f856831..c7bbae50bb97052b9673cb00b09bd67a28b2c6d6 100644
--- a/chrome/browser/ui/app_list/app_list_view_delegate.h
+++ b/chrome/browser/ui/app_list/app_list_view_delegate.h
@@ -19,7 +19,7 @@ class SearchBuilder;
 class AppListViewDelegate : public app_list::AppListViewDelegate {
  public:
   // The delegate will take ownership of the controller.
-  explicit AppListViewDelegate(AppListController* controller);
+  explicit AppListViewDelegate(AppListControllerDelegate* controller);
   virtual ~AppListViewDelegate();
 
  private:
@@ -35,10 +35,12 @@ class AppListViewDelegate : public app_list::AppListViewDelegate {
                                         int action_index,
                                         int event_flags) OVERRIDE;
   virtual void Close() OVERRIDE;
+  virtual void ViewClosing() OVERRIDE;
+  virtual void ViewActivationChanged(bool active) OVERRIDE;
 
   scoped_ptr<AppsModelBuilder> apps_builder_;
   scoped_ptr<SearchBuilder> search_builder_;
-  scoped_ptr<AppListController> controller_;
+  scoped_ptr<AppListControllerDelegate> controller_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListViewDelegate);
 };