Disable flaky WebNavigationApiTest.CrossProcessHistory.

chrome/browser/extensions/api/web_navigation/web_navigation_apitest.cc

Index: chrome/browser/extensions/api/web_navigation/web_navigation_apitest.cc
diff --git a/chrome/browser/extensions/api/web_navigation/web_navigation_apitest.cc b/chrome/browser/extensions/api/web_navigation/web_navigation_apitest.cc
index 10d0ee92095284ddaaaeed38ff5c942c35309fc5..7c801da029b0564e69ea3a0abafdc57d953687de 100644
--- a/chrome/browser/extensions/api/web_navigation/web_navigation_apitest.cc
+++ b/chrome/browser/extensions/api/web_navigation/web_navigation_apitest.cc
@@ -749,7 +749,8 @@ IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, CrossProcessFragment) {
       << message_;
 }
 
-IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, CrossProcessHistory) {
+// crbug.com/708139.
+IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, DISABLED_CrossProcessHistory) {
   ASSERT_TRUE(StartEmbeddedTestServer());
 
   // See crossProcessHistory/e.html.