Add profile selector menu to app list.

ui/app_list/app_list_model.cc

Index: ui/app_list/app_list_model.cc
diff --git a/ui/app_list/app_list_model.cc b/ui/app_list/app_list_model.cc
index 31e4c27402060b4824554283cd9c02b8c3e5c2b7..deb539269325a37c6bb463436fa381f38d10b1a1 100644
--- a/ui/app_list/app_list_model.cc
+++ b/ui/app_list/app_list_model.cc
@@ -8,6 +8,7 @@
 #include "ui/app_list/app_list_model_observer.h"
 #include "ui/app_list/search_box_model.h"
 #include "ui/app_list/search_result.h"
+#include "ui/base/profile_selector/avatar_menu_item_model.h"
 
 namespace app_list {
 
@@ -20,6 +21,7 @@ AppListModel::AppListModel()
 }
 
 AppListModel::~AppListModel() {
+  STLDeleteElements(&profile_menu_items_);
 }
 
 void AppListModel::AddObserver(AppListModelObserver* observer) {
@@ -49,6 +51,15 @@ void AppListModel::SetCurrentUser(const base::string16& current_user_name,
                     OnAppListModelCurrentUserChanged());
 }
 
+void AppListModel::SetProfileMenuItems(
+    const ProfileMenuItems& profile_menu_items) {
+  STLDeleteElements(&profile_menu_items_);
+  profile_menu_items_ = profile_menu_items;
+  FOR_EACH_OBSERVER(AppListModelObserver,
+                    observers_,
+                    OnAppListModelProfileMenuItemsChanged());
+}
+
 void AppListModel::SetSignedIn(bool signed_in) {
   signed_in_ = signed_in;
   FOR_EACH_OBSERVER(AppListModelObserver,