Trust the renderer's same-document navigation flag if it is a same-origin nav.

chrome/browser/translate/translate_manager_render_view_host_unittest.cc

 // Copyright 2014 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 <algorithm>
 #include <set>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_change_registrar.h"
@@ skipping 76 matching lines @@
   TranslateManagerRenderViewHostTest()
       : pref_callback_(
             base::Bind(&TranslateManagerRenderViewHostTest::OnPreferenceChanged,
                        base::Unretained(this))) {}
 
   // Simulates navigating to a page and getting the page contents and language
   // for that navigation.
   void SimulateNavigation(const GURL& url,
                           const std::string& lang,
                           bool page_translatable) {
-    NavigateAndCommit(url);
+    if (rvh()->GetMainFrame()->GetLastCommittedURL() == url)
+      Reload();
+    else
+      NavigateAndCommit(url);
     SimulateOnTranslateLanguageDetermined(lang, page_translatable);
   }
 
   void SimulateOnTranslateLanguageDetermined(const std::string& lang,
                                              bool page_translatable) {
     LanguageDetectionDetails details;
     details.adopted_language = lang;
     content::RenderViewHostTester::TestOnMessageReceived(
         rvh(),
         ChromeViewHostMsg_TranslateLanguageDetermined(
@@ skipping 679 matching lines @@
   GURL url("http://www.google.fr");
   SimulateNavigation(url, "fr", true);
 
   EXPECT_TRUE(CloseTranslateInfoBar());
 
   // Create a pending navigation and simulate a page load.  That should be the
   // equivalent of typing the URL again in the location bar.
   NavEntryCommittedObserver nav_observer(web_contents());
   web_contents()->GetController().LoadURL(
       url, content::Referrer(), content::PAGE_TRANSITION_TYPED, std::string());
-  rvh_tester()->SendNavigate(0, url);
+  rvh_tester()->SendNavigateWithTransition(
+      0, url, content::PAGE_TRANSITION_TYPED);
 
   // Test that we are really getting a same page navigation, the test would be
   // useless if it was not the case.
   const content::LoadCommittedDetails& nav_details =
       nav_observer.load_committed_details();
   EXPECT_TRUE(nav_details.entry != NULL);  // There was a navigation.
   EXPECT_EQ(content::NAVIGATION_TYPE_SAME_PAGE, nav_details.type);
 
   // The TranslateManager class processes the navigation entry committed
   // notification in a posted task; process that task.
@@ skipping 736 matching lines @@
   // Check the bubble exists instead of the infobar.
   TranslateInfoBarDelegate* infobar = GetTranslateInfoBar();
   ASSERT_TRUE(infobar == NULL);
   TranslateBubbleModel* bubble = factory->model();
   ASSERT_TRUE(bubble != NULL);
   EXPECT_EQ(TranslateBubbleModel::VIEW_STATE_TRANSLATING,
             bubble->GetViewState());
 }
 
 #endif  // defined(USE_AURA)