Mark testBrowsingPostEntryWithKeyboard as FLAKY_.

ios/chrome/browser/web/browsing_egtest.mm

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import <XCTest/XCTest.h>
 #include <map>
 #include <memory>
 #include <string>
 
 #include "base/ios/ios_util.h"
@@ skipping 614 matching lines @@
 
   // Reenable synchronization now that the keyboard has been closed.
   [[GREYConfiguration sharedInstance]
           setValue:@YES
       forConfigKey:kGREYConfigKeySynchronizationEnabled];
 }
 
 // Tests that submitting a POST-based form by tapping the 'Go' button on the
 // keyboard navigates to the correct URL and the back button works as expected
 // afterwards.
-- (void)testBrowsingPostEntryWithKeyboard {
+// TODO(crbug.com/704618): Re-enable this test when the flake is fixed.
+- (void)FLAKY_testBrowsingPostEntryWithKeyboard {
   // Create map of canned responses and set up the test HTML server.
   std::map<GURL, std::string> responses;
   const GURL URL =
       web::test::HttpServer::MakeUrl("http://postEntryWithKeyboard");
   const GURL destinationURL = web::test::HttpServer::MakeUrl("http://foo");
   // This is a page this an input text field and a button that posts to the
   // destination.
   responses[URL] = base::StringPrintf(
       "hello!"
       "<form action='%s' method='post'>"
@@ skipping 15 matching lines @@
   [[EarlGrey selectElementWithMatcher:OmniboxText(destinationURL.GetContent())]
       assertWithMatcher:grey_notNil()];
 
   // Go back and verify that the browser navigates to the original URL.
   [self goBack];
   [[EarlGrey selectElementWithMatcher:OmniboxText(URL.GetContent())]
       assertWithMatcher:grey_notNil()];
 }
 
 @end