Add profile selector menu to app list.

ui/app_list/views/app_list_view.cc

Index: ui/app_list/views/app_list_view.cc
diff --git a/ui/app_list/views/app_list_view.cc b/ui/app_list/views/app_list_view.cc
index 863e25e55df8ed22c06c2754746e4cb85b65f187..4190173ee685f24f160a714d677ac3676d6eaa99 100644
--- a/ui/app_list/views/app_list_view.cc
+++ b/ui/app_list/views/app_list_view.cc
@@ -129,6 +129,28 @@ void AppListView::InitAsBubble(gfx::NativeView parent,
 #endif
 }
 
+void AppListView::SetModel(app_list::AppListModel* model) {
+  if (GetSigninDelegate())
+    GetSigninDelegate()->RemoveObserver(this);
+  // Sets the model on the view so the view is hooked up to listen to the model.
+  // This cleans up the observers of the old model.
+  app_list_main_view_->SetModel(model);
+  // Build the model which will notify the view, updating it. This also resets
+  // the signin delegate which will fail if any observers are listening to the
+  // old delegate.
+  if (delegate_)
+    delegate_->SetModel(model);
+  // Reset the model here, freeing it. This is done after all cleanup involving
+  // references to this model is complete.
+  model_.reset(model);
+  // Sets the signin view's delegate from the AppListViewDelegate.
+  signin_view_->SetDelegate(GetSigninDelegate());
+  if (GetSigninDelegate())
+    GetSigninDelegate()->AddObserver(this);
+  // Show the signin view if the new profile is not signed in.
+  OnSigninStatusChanged();
+}
+
 void AppListView::SetBubbleArrow(views::BubbleBorder::Arrow arrow) {
   GetBubbleFrameView()->bubble_border()->set_arrow(arrow);
   SizeToContents();  // Recalcuates with new border.
@@ -178,6 +200,7 @@ void AppListView::OnSigninStatusChanged() {
       GetSigninDelegate() && GetSigninDelegate()->NeedSignin();
 
   signin_view_->SetVisible(needs_signin);
+  delegate_->RebuildAvatarMenuItems(model_.get());
   app_list_main_view_->SetVisible(!needs_signin);
   app_list_main_view_->search_box_view()->InvalidateMenu();
 }