Instant interactive_ui_tests should wait for main frame load.

chrome/browser/ui/search/instant_test_utils.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/search/instant_test_utils.h"
 
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 100 matching lines @@
 }
 
 void InstantTestBase::PressEnterAndWaitForNavigation() {
   content::WindowedNotificationObserver nav_observer(
       content::NOTIFICATION_NAV_ENTRY_COMMITTED,
       content::NotificationService::AllSources());
   browser_->window()->GetLocationBar()->AcceptInput();
   nav_observer.Wait();
 }
 
+void InstantTestBase::PressEnterAndWaitForFrameLoad() {
+  content::WindowedNotificationObserver nav_observer(
+      content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
+      content::NotificationService::AllSources());
+  browser_->window()->GetLocationBar()->AcceptInput();
+  nav_observer.Wait();
+}
+
 bool InstantTestBase::GetBoolFromJS(content::WebContents* contents,
                                     const std::string& script,
                                     bool* result) {
   return content::ExecuteScriptAndExtractBool(
       contents, WrapScript(script), result);
 }
 
 bool InstantTestBase::GetIntFromJS(content::WebContents* contents,
                                    const std::string& script,
                                    int* result) {
@@ skipping 32 matching lines @@
   return content::ExecuteScriptAndExtractBool(rvh, js_chrome, loaded);
 }
 
 base::string16 InstantTestBase::GetBlueText() {
   size_t start = 0, end = 0;
   omnibox()->GetSelectionBounds(&start, &end);
   if (start > end)
     std::swap(start, end);
   return omnibox()->GetText().substr(start, end - start);
 }