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

chrome/browser/errorpage_browsertest.cc

Index: chrome/browser/errorpage_browsertest.cc
diff --git a/chrome/browser/errorpage_browsertest.cc b/chrome/browser/errorpage_browsertest.cc
index 1b8a54f72dd1a61aa3e598a8b4d002b5fa988ca9..824514c53d0b5c871ed307244523350f654e2e2f 100644
--- a/chrome/browser/errorpage_browsertest.cc
+++ b/chrome/browser/errorpage_browsertest.cc
@@ -139,7 +139,8 @@ IN_PROC_BROWSER_TEST_F(ErrorPageTest, DNSError_GoBack1) {
 #endif
 // Test that a DNS error occuring in the main frame does not result in an
 // additional session history entry.
-IN_PROC_BROWSER_TEST_F(ErrorPageTest, MAYBE_DNSError_GoBack2) {
+// Disabled:  http://crbug.com/136310
+IN_PROC_BROWSER_TEST_F(ErrorPageTest, DISABLED_DNSError_GoBack2) {
   NavigateToFileURL(FILE_PATH_LITERAL("title2.html"));
 
   NavigateToURLAndWaitForTitle(GetDnsErrorURL(), "Mock Link Doctor", 2);
@@ -157,7 +158,8 @@ IN_PROC_BROWSER_TEST_F(ErrorPageTest, MAYBE_DNSError_GoBack2) {
 #endif
 // Test that a DNS error occuring in the main frame does not result in an
 // additional session history entry.
-IN_PROC_BROWSER_TEST_F(ErrorPageTest, MAYBE_DNSError_GoBack2AndForward) {
+// Disabled:  http://crbug.com/136310
+IN_PROC_BROWSER_TEST_F(ErrorPageTest, DISABLED_DNSError_GoBack2AndForward) {
   NavigateToFileURL(FILE_PATH_LITERAL("title2.html"));
 
   NavigateToURLAndWaitForTitle(GetDnsErrorURL(), "Mock Link Doctor", 2);
@@ -177,7 +179,8 @@ IN_PROC_BROWSER_TEST_F(ErrorPageTest, MAYBE_DNSError_GoBack2AndForward) {
 #endif
 // Test that a DNS error occuring in the main frame does not result in an
 // additional session history entry.
-IN_PROC_BROWSER_TEST_F(ErrorPageTest, MAYBE_DNSError_GoBack2Forward2) {
+// Disabled:  http://crbug.com/136310
+IN_PROC_BROWSER_TEST_F(ErrorPageTest, DISABLED_DNSError_GoBack2Forward2) {
   NavigateToFileURL(FILE_PATH_LITERAL("title3.html"));
 
   NavigateToURLAndWaitForTitle(GetDnsErrorURL(), "Mock Link Doctor", 2);