Disable failing navigation callbacks test

ios/web/web_state/navigation_callbacks_inttest.mm

 // Copyright 2017 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.
 
 #include <memory>
 #include <string>
 
 #include "base/memory/ptr_util.h"
 #include "base/strings/stringprintf.h"
 #import "ios/web/public/navigation_item.h"
@@ skipping 468 matching lines @@
       .WillOnce(VerifyReloadStartedContext(web_state(), url, &context));
   EXPECT_CALL(*observer_, DidStartLoading());
   EXPECT_CALL(*observer_, DidFinishNavigation(_))
       .WillOnce(VerifyReloadFinishedContext(web_state(), url, &context,
                                             false /* is_web_page */));
   EXPECT_CALL(*observer_, DidStopLoading());
   navigation_manager()->Reload(ReloadType::NORMAL, false /*check_for_repost*/);
 }
 
 // Tests successful navigation to a new page with post HTTP method.
-TEST_F(NavigationCallbacksTest, UserInitiatedPostNavigation) {
+// TODO (crbug/729602): This test is disabled due to failing on iOS 9.3 devices.
+#if TARGET_IPHONE_SIMULATOR
+#define MAYBE_UserInitiatedPostNavigation UserInitiatedPostNavigation
+#else
+#define MAYBE_UserInitiatedPostNavigation DISABLED_UserInitiatedPostNavigation
+#endif
+TEST_F(NavigationCallbacksTest, MAYBE_UserInitiatedPostNavigation) {
   const GURL url = HttpServer::MakeUrl("http://chromium.test");
   std::map<GURL, std::string> responses;
   responses[url] = "Chromium Test";
   web::test::SetUpSimpleHttpServer(responses);
 
   // Perform new page navigation.
   NavigationContext* context = nullptr;
   EXPECT_CALL(*observer_, DidStartNavigation(_))
       .WillOnce(VerifyPostStartedContext(web_state(), url, &context));
   EXPECT_CALL(*observer_, DidStartLoading());
@@ skipping 28 matching lines @@
   EXPECT_CALL(*observer_, DidStartNavigation(_))
       .WillOnce(VerifyPostStartedContext(web_state(), url, &context));
   EXPECT_CALL(*observer_, DidStartLoading());
   EXPECT_CALL(*observer_, DidFinishNavigation(_))
       .WillOnce(VerifyPostFinishedContext(web_state(), url, &context));
   EXPECT_CALL(*observer_, DidStopLoading());
   ExecuteJavaScript(@"window.document.getElementById('form').submit();");
 }
 
 // Tests successful reload of a page returned for post request.
-TEST_F(NavigationCallbacksTest, ReloadPostNavigation) {
+// TODO (crbug/729602): This test is disabled due to failing on iOS 9.3 devices.
+#if TARGET_IPHONE_SIMULATOR
+#define MAYBE_ReloadPostNavigation ReloadPostNavigation
+#else
+#define MAYBE_ReloadPostNavigation DISABLED_ReloadPostNavigation
+#endif
+TEST_F(NavigationCallbacksTest, MAYBE_ReloadPostNavigation) {
   const GURL url = HttpServer::MakeUrl("http://chromium.test");
   std::map<GURL, std::string> responses;
   const GURL action = HttpServer::MakeUrl("http://action.test");
   responses[url] =
       base::StringPrintf("<form method='post' id='form' action='%s'></form>",
                          action.spec().c_str());
   web::test::SetUpSimpleHttpServer(responses);
 
   // Perform new page navigation.
   NavigationContext* context = nullptr;
@@ skipping 24 matching lines @@
   // the delegate will allow form resubmission. Remove this workaround (clearing
   // the delegate, once |check_for_repost| is supported).
   web_state()->SetDelegate(nullptr);
   ExecuteBlockAndWaitForLoad(action, ^{
     navigation_manager()->Reload(ReloadType::NORMAL,
                                  false /*check_for_repost*/);
   });
 }
 
 // Tests going forward to a page rendered from post response.
-TEST_F(NavigationCallbacksTest, ForwardPostNavigation) {
+// TODO (crbug/729602): This test is disabled due to failing on iOS 9.3 devices.
+#if TARGET_IPHONE_SIMULATOR
+#define MAYBE_ForwardPostNavigation ForwardPostNavigation
+#else
+#define MAYBE_ForwardPostNavigation DISABLED_ForwardPostNavigation
+#endif
+TEST_F(NavigationCallbacksTest, MAYBE_ForwardPostNavigation) {
   const GURL url = HttpServer::MakeUrl("http://chromium.test");
   std::map<GURL, std::string> responses;
   const GURL action = HttpServer::MakeUrl("http://action.test");
   responses[url] =
       base::StringPrintf("<form method='post' id='form' action='%s'></form>",
                          action.spec().c_str());
   web::test::SetUpSimpleHttpServer(responses);
 
   // Perform new page navigation.
   NavigationContext* context = nullptr;
@@ skipping 32 matching lines @@
   // delegate does not run callback for ShowRepostFormWarningDialog. Clearing
   // the delegate will allow form resubmission. Remove this workaround (clearing
   // the delegate, once |check_for_repost| is supported).
   web_state()->SetDelegate(nullptr);
   ExecuteBlockAndWaitForLoad(action, ^{
     navigation_manager()->GoForward();
   });
 }
 
 }  // namespace web