Add profile selector menu to app list.

ui/app_list/app_list_view_delegate.h

Index: ui/app_list/app_list_view_delegate.h
diff --git a/ui/app_list/app_list_view_delegate.h b/ui/app_list/app_list_view_delegate.h
index e674d2281bb4fe7a2582dd04d9dc8bc47e778edb..3ce87afe3cc50a88dd9eb0a719fb105546691774 100644
--- a/ui/app_list/app_list_view_delegate.h
+++ b/ui/app_list/app_list_view_delegate.h
@@ -29,9 +29,14 @@ class APP_LIST_EXPORT AppListViewDelegate {
   // AppListView owns the delegate.
   virtual ~AppListViewDelegate() {}
 
-  // Invoked to set the model that AppListView uses.
+  // Sets the delegate to use the profile at |profile_path|.
+  virtual void SetProfileByPath(const base::FilePath& profile_path) = 0;
+
+  // Invoked to initialize the model that AppListView uses. This binds the given
+  // model to this AppListViewDelegate and makes the AppListViewDelegate
+  // responsible for updating the model.
   // Note that AppListView owns the model.
-  virtual void SetModel(AppListModel* model) = 0;
+  virtual void InitModel(AppListModel* model) = 0;
 
   // Gets the SigninDelegate for the app list. Owned by the AppListViewDelegate.
   virtual SigninDelegate* GetSigninDelegate() = 0;
@@ -81,6 +86,9 @@ class APP_LIST_EXPORT AppListViewDelegate {
 
   // Open the feedback UI.
   virtual void OpenFeedback() = 0;
+
+  // Shows the app list for the profile specified by |profile_path|.
+  virtual void ShowForProfileByPath(const base::FilePath& profile_path) = 0;
 };
 
 }  // namespace app_list