Suppress NEW_NAVIGATION_ENTRY prerenderer failures for ORIGIN_OFFLINE

chrome/browser/prerender/prerender_browsertest.cc

Index: chrome/browser/prerender/prerender_browsertest.cc
diff --git a/chrome/browser/prerender/prerender_browsertest.cc b/chrome/browser/prerender/prerender_browsertest.cc
index 4b830e7abdcb9cf5c526a9846059ba17ac7ed8fc..fb9f1b705e9a15b261788c9482b49effc2fd7180 100644
--- a/chrome/browser/prerender/prerender_browsertest.cc
+++ b/chrome/browser/prerender/prerender_browsertest.cc
@@ -3110,6 +3110,31 @@ IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest, PrerenderNewNavigationEntry) {
                    FINAL_STATUS_NEW_NAVIGATION_ENTRY, 1);
 }
 
+// Checks that the prerendering of a page for ORIGIN_OFFLINE is not canceled
+// when the prerendered page tries to make a second navigation entry.
+IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest,
+                       PrerenderNoNewNavigationEntryForOffline) {

[pasko, 2017/01/26 12:09:39]

nit: I think this checks when there _is_ a new navigation entry on the page, so
I'd name it with s/No//.

[dougarnett, 2017/01/26 16:27:39]

Done.

+  // Navigate to about:blank to get the session storage namespace.
+  ui_test_utils::NavigateToURL(current_browser(), GURL(url::kAboutBlankURL));
+  content::SessionStorageNamespace* storage_namespace =
+      GetActiveWebContents()
+          ->GetController()
+          .GetDefaultSessionStorageNamespace();
+
+  std::unique_ptr<TestPrerender> test_prerender =
+      prerender_contents_factory()->ExpectPrerenderContents(
+          FINAL_STATUS_APP_TERMINATING);
+
+  const GURL url =
+      src_server()->GetURL(MakeAbsolute("/prerender/prerender_new_entry.html"));
+  std::unique_ptr<PrerenderHandle> prerender_handle(
+      GetPrerenderManager()->AddPrerenderForOffline(url, storage_namespace,
+                                                    gfx::Size(640, 480)));
+  ASSERT_EQ(prerender_handle->contents(), test_prerender->contents());
+  test_prerender->WaitForLoads(2);
+  ASSERT_EQ(1, GetActiveWebContents()->GetController().GetEntryCount());
+}
+
 // Attempt a swap-in in a new tab. The session storage doesn't match, so it
 // should not swap.
 IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest, PrerenderPageNewTab) {