Update defaults for InstantExtended.

chrome/browser/signin/signin_browsertest.cc

Index: chrome/browser/signin/signin_browsertest.cc
diff --git a/chrome/browser/signin/signin_browsertest.cc b/chrome/browser/signin/signin_browsertest.cc
index d3031c0dbe17e8c47a70db9e55952145c1b684e6..3fa796cd4bc3b668855541322b2b3790a52ed3be 100644
--- a/chrome/browser/signin/signin_browsertest.cc
+++ b/chrome/browser/signin/signin_browsertest.cc
@@ -109,7 +109,7 @@ IN_PROC_BROWSER_TEST_F(SigninBrowserTest, MAYBE_ProcessIsolation) {
   EXPECT_EQ(kOneClickSigninEnabled, signin->HasSigninProcess());
 
   // Navigating away should change the process.
-  ui_test_utils::NavigateToURL(browser(), GURL(chrome::kChromeUINewTabURL));
+  ui_test_utils::NavigateToURL(browser(), GURL(chrome::kChromeUIOmniboxURL));
   EXPECT_FALSE(signin->HasSigninProcess());
 
   ui_test_utils::NavigateToURL(browser(), signin::GetPromoURL(
@@ -136,7 +136,7 @@ IN_PROC_BROWSER_TEST_F(SigninBrowserTest, MAYBE_ProcessIsolation) {
             signin->IsSigninProcess(active_tab_process_id));
 
   // Navigating away should change the process.
-  ui_test_utils::NavigateToURL(browser(), GURL(kNonSigninURL));
+  ui_test_utils::NavigateToURL(browser(), GURL(chrome::kChromeUIOmniboxURL));
   EXPECT_FALSE(signin->IsSigninProcess(
       active_tab->GetRenderProcessHost()->GetID()));
 }
@@ -192,7 +192,9 @@ class BackOnNTPCommitObserver : public content::WebContentsObserver {
 // that occur if the user clicks on the "Skip for now" link at the signin page
 // and initiates a back navigation between the point of Commit and
 // DidStopLoading of the NTP.
-IN_PROC_BROWSER_TEST_F(SigninBrowserTest, SigninSkipForNowAndGoBack) {
+// TODO(samarth): this test doesn't make sense with a prerendered NTP. But
+// re-enable it when we are using a cached NTP and no longer prerendering it.
+IN_PROC_BROWSER_TEST_F(SigninBrowserTest, DISABLED_SigninSkipForNowAndGoBack) {
   GURL ntp_url(chrome::kChromeUINewTabURL);
   GURL start_url = signin::GetPromoURL(signin::SOURCE_START_PAGE, true);
   GURL skip_url = signin::GetLandingURL("ntp", 1);