Revert 96593 - Fix up various browser tests not to use WaitForNavigation.

chrome/browser/sidebar/sidebar_browsertest.cc

Index: chrome/browser/sidebar/sidebar_browsertest.cc
===================================================================
--- chrome/browser/sidebar/sidebar_browsertest.cc	(revision 96616)
+++ chrome/browser/sidebar/sidebar_browsertest.cc	(working copy)
@@ -72,11 +72,13 @@
 
     SidebarManager* sidebar_manager = SidebarManager::GetInstance();
 
-    ui_test_utils::WindowedNotificationObserver observer(
-        content::NOTIFICATION_LOAD_STOP,
-        Source<NavigationController>(&tab->controller()));
     sidebar_manager->NavigateSidebar(tab, content_id_, url);
-    observer.Wait();
+
+    SidebarContainer* sidebar_container =
+        sidebar_manager->GetSidebarContainerFor(tab, content_id_);
+
+    TabContents* client_contents = sidebar_container->sidebar_contents();
+    ui_test_utils::WaitForNavigation(&client_contents->controller());
   }
 
   void ShowSidebar(TabContents* tab) {
@@ -197,3 +199,4 @@
 }
 
 }  // namespace
+