Enable WebNavigationApiTest.CrossProcess(History|Fragment).

Bug: 708139
Change-Id: Idb9eb18755219be4164b6fc2585aa43ed9798dc1
Reviewed-on: https://chromium-review.googlesource.com/601027Reviewed-by: Alex Moshchuk <alexmos@chromium.org>
Commit-Queue: Nasko Oskov <nasko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#491836}

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

@@ -721,8 +721,7 @@ IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, CrossProcessAbort) {
   ASSERT_TRUE(catcher.GetNextResult()) << catcher.message();
 }
 
-// crbug.com/708139.
-IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, DISABLED_CrossProcessFragment) {
+IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, CrossProcessFragment) {
   ASSERT_TRUE(StartEmbeddedTestServer());
 
   // See crossProcessFragment/f.html.
@@ -743,8 +742,7 @@ IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, DISABLED_CrossProcessFragment) {
       << message_;
 }
 
-// crbug.com/708139.
-IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, DISABLED_CrossProcessHistory) {
+IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, CrossProcessHistory) {
   ASSERT_TRUE(StartEmbeddedTestServer());
 
   // See crossProcessHistory/e.html.