PlzNavigate: fix expectation in NavigationControllerBrowserTest

content/browser/frame_host/navigation_controller_impl_browsertest.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 "content/browser/frame_host/navigation_controller_impl.h"
 
 #include <stdint.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 2586 matching lines @@
       controller.GetLastCommittedEntry()->GetFrameEntry(foo_subframe);
   std::string named_subframe_name = "foo";
   EXPECT_EQ(named_subframe_name, foo_subframe_entry->frame_unique_name());
 
   // 4. Navigating in the subframes cross-process shouldn't change their names.
   // TODO(creis): Fix the unnamed case in https://crbug.com/502317.
   GURL bar_url(embedded_test_server()->GetURL(
       "bar.com", "/navigation_controller/simple_page_1.html"));
   NavigateFrameToURL(foo_subframe, bar_url);
   EXPECT_TRUE(WaitForLoadStop(shell()->web_contents()));
-  EXPECT_NE(main_site_instance,
-            foo_subframe->current_frame_host()->GetSiteInstance());
+
+  // When run just with subframe navigation entries enabled and not in
+  // site-per-process-mode the subframe should be in the same SiteInstance as
+  // its parent.
+  if (!SiteIsolationPolicy::AreCrossProcessFramesPossible()) {
+    EXPECT_EQ(main_site_instance,
+              foo_subframe->current_frame_host()->GetSiteInstance());
+  } else {
+    EXPECT_NE(main_site_instance,
+              foo_subframe->current_frame_host()->GetSiteInstance());
+  }
+
   foo_subframe_entry =
       controller.GetLastCommittedEntry()->GetFrameEntry(foo_subframe);
   EXPECT_EQ(named_subframe_name, foo_subframe_entry->frame_unique_name());
 }
 
 // Verifies that item sequence numbers and document sequence numbers update
 // properly for main frames and subframes.
 IN_PROC_BROWSER_TEST_F(NavigationControllerBrowserTest,
                        FrameNavigationEntry_SequenceNumbers) {
   const NavigationControllerImpl& controller =
@@ skipping 568 matching lines @@
     EXPECT_EQ(original_url, capturer.all_params()[1].url);
     EXPECT_EQ(original_url, shell()->web_contents()->GetLastCommittedURL());
   }
 
   // Make sure the renderer is still alive.
   EXPECT_TRUE(
       ExecuteScript(shell()->web_contents(), "console.log('Success');"));
 }
 
 }  // namespace content