Auto hide app list on Windows when it loses focus.

chrome/browser/ui/app_list/app_list_view_delegate.cc

Index: chrome/browser/ui/app_list/app_list_view_delegate.cc
diff --git a/chrome/browser/ui/app_list/app_list_view_delegate.cc b/chrome/browser/ui/app_list/app_list_view_delegate.cc
index 67bc837695fbc6195487fd982f2d30b56d35c70c..56ff598a473edc66026276a2e5e581d981fa6bb9 100644
--- a/chrome/browser/ui/app_list/app_list_view_delegate.cc
+++ b/chrome/browser/ui/app_list/app_list_view_delegate.cc
@@ -10,7 +10,7 @@
 #include "chrome/browser/ui/app_list/search_builder.h"
 #include "content/public/browser/user_metrics.h"
 
-AppListViewDelegate::AppListViewDelegate(AppListController* controller)
+AppListViewDelegate::AppListViewDelegate(AppListControllerDelegate* controller)
     : controller_(controller) {}
 
 AppListViewDelegate::~AppListViewDelegate() {}
@@ -68,3 +68,11 @@ void AppListViewDelegate::InvokeSearchResultAction(
 void AppListViewDelegate::Close()  {
   controller_->CloseView();
 }
+
+void AppListViewDelegate::ViewClosing() {
+  controller_->ViewClosing();
+}
+
+void AppListViewDelegate::ViewActivationChanged(bool active) {
+  controller_->ViewActivationChanged(active);
+}