Disable tests which started to fail on canary after r121912 of WebKit.

chrome/browser/captive_portal/captive_portal_browsertest.cc

Index: chrome/browser/captive_portal/captive_portal_browsertest.cc
diff --git a/chrome/browser/captive_portal/captive_portal_browsertest.cc b/chrome/browser/captive_portal/captive_portal_browsertest.cc
index 12a9d6ca07bf5fce4d53da3e480359062926fb19..5b9137e0ad42bb37e0d8a3b55f9fa18f83677b9d 100644
--- a/chrome/browser/captive_portal/captive_portal_browsertest.cc
+++ b/chrome/browser/captive_portal/captive_portal_browsertest.cc
@@ -1710,7 +1710,8 @@ IN_PROC_BROWSER_TEST_F(CaptivePortalBrowserTest, GoBack) {
 }
 
 // Checks that navigating back to a timeout triggers captive portal detection.
-IN_PROC_BROWSER_TEST_F(CaptivePortalBrowserTest, GoBackToTimeout) {
+// Disabled:  http://crbug.com/136310
+IN_PROC_BROWSER_TEST_F(CaptivePortalBrowserTest, DISABLED_GoBackToTimeout) {
   // Disable captive portal detection so the first navigation doesn't open a
   // login tab.
   EnableCaptivePortalDetection(browser()->profile(), false);
@@ -1767,7 +1768,8 @@ IN_PROC_BROWSER_TEST_F(CaptivePortalBrowserTest, GoBackToTimeout) {
 // Checks that reloading a timeout triggers captive portal detection.
 // Much like the last test, though the captive portal is disabled before
 // the inital navigation, rather than captive portal detection.
-IN_PROC_BROWSER_TEST_F(CaptivePortalBrowserTest, ReloadTimeout) {
+// Disabled:  http://crbug.com/136310
+IN_PROC_BROWSER_TEST_F(CaptivePortalBrowserTest, DISABLED_ReloadTimeout) {
   URLRequestMockCaptivePortalJobFactory::SetBehindCaptivePortal(false);
 
   // Do the first navigation while not behind a captive portal.