Disable 2 sync tests failing on iOS.

ios/chrome/browser/ui/sync/sync_fake_server_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 <EarlGrey/EarlGrey.h>
 #import <XCTest/XCTest.h>
 
 #include "base/strings/sys_string_conversions.h"
 #include "components/bookmarks/browser/bookmark_model.h"
 #include "components/bookmarks/browser/titled_url_match.h"
@@ skipping 413 matching lines @@
   NSError* error = nil;
   BOOL success = chrome_test_util::VerifySessionsOnSyncServer(
       std::multiset<std::string>{URL1.spec(), URL2.spec()}, &error);
 
   DCHECK(success || error);
   GREYAssertTrue(success, [error localizedDescription]);
 }
 
 // Tests that a typed URL (after Sync is enabled) is uploaded to the Sync
 // server.
-- (void)testSyncTypedURLUpload {
+// TODO(crbug.com/707846): Re-enable test.
+- (void)DISABLED_testSyncTypedURLUpload {
   const GURL mockURL("http://not-a-real-site/");
 
   chrome_test_util::ClearBrowsingHistory();
 
   [self setTearDownHandler:^{
     chrome_test_util::ClearBrowsingHistory();
   }];
   chrome_test_util::AddTypedURLOnClient(mockURL);
 
   // Sign in to sync.
@@ skipping 100 matching lines @@
   // Delete typed URL from client.
   chrome_test_util::DeleteTypedUrlFromClient(mockURL);
 
   // Trigger sync and wait for typed URL to be deleted.
   chrome_test_util::TriggerSyncCycle(syncer::TYPED_URLS);
   AssertNumberOfEntities(0, syncer::TYPED_URLS);
 }
 
 // Test that typed url is deleted from client after server sends tombstone for
 // that typed url.
-- (void)testSyncTypedURLDeleteFromServer {
+// TODO(crbug.com/707846): Re-enable test.
+- (void)DISABLE_testSyncTypedURLDeleteFromServer {
   const GURL mockURL("http://not-a-real-site/");
 
   chrome_test_util::ClearBrowsingHistory();
 
   [self setTearDownHandler:^{
     chrome_test_util::ClearBrowsingHistory();
   }];
   chrome_test_util::AddTypedURLOnClient(mockURL);
 
   // Sign in to sync.
@@ skipping 62 matching lines @@
 
   // Verify the correct number of bookmarks exist.
   base::string16 matchString = base::SysNSStringToUTF16(title);
   std::vector<bookmarks::TitledUrlMatch> matches;
   bookmarkModel->GetBookmarksMatching(matchString, 50, &matches);
   const size_t count = matches.size();
   GREYAssertEqual(expectedCount, count, @"Unexpected number of bookmarks");
 }
 
 @end