Disable flaky testBrowsingPostToSamePage on devices.

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 423 matching lines @@
       assertWithMatcher:grey_notNil()];
 
   // Verify that no new tabs were open which could load chrome://version.
   chrome_test_util::AssertMainTabCount(1U);
 }
 
 // Tests that pressing the button on a POST-based form with same-page action
 // does not change the page and that the back button works as expected
 // afterwards.
 - (void)testBrowsingPostToSamePage {
+// TODO(crbug.com/714303): Re-enable this test on devices.
+#if !TARGET_IPHONE_SIMULATOR

[Eugene But (OOO till 7-30), 2017/04/21 22:49:25]

We normally use MAYBE_ macro for disabling tests on device. 

+  EARL_GREY_TEST_DISABLED(@"Test disabled on device.");
+#endif
+
   // Create map of canned responses and set up the test HTML server.
   std::map<GURL, std::string> responses;
   const GURL firstURL = web::test::HttpServer::MakeUrl("http://first");
   const GURL formURL = web::test::HttpServer::MakeUrl("http://form");
   // This is just a page with some text.
   responses[firstURL] = "foo";
   // This is a page with at button that posts to the current URL.
   responses[formURL] =
       "<form method='post'>"
       "<input value='button' type='submit' id='button'></form>";
@@ skipping 184 matching lines @@
 
   // Go back and verify that the browser navigates to the original URL.
   [self goBack];
   [[EarlGrey selectElementWithMatcher:WebViewContainingText("hello!")]
       assertWithMatcher:grey_notNil()];
   [[EarlGrey selectElementWithMatcher:OmniboxText(URL.GetContent())]
       assertWithMatcher:grey_notNil()];
 }
 
 @end