Remove calls to MessageLoop::Run/RunUntilIdle from ios/.

ios/web/net/request_tracker_impl_unittest.mm

 // Copyright 2012 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 "ios/web/net/request_tracker_impl.h"
 
 #include <stddef.h>
 
 #include "base/logging.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/scoped_vector.h"
 #include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
 #include "base/strings/sys_string_conversions.h"
 #include "ios/web/public/cert_policy.h"
 #include "ios/web/public/certificate_policy_cache.h"
 #include "ios/web/public/ssl_status.h"
 #include "ios/web/public/test/test_browser_state.h"
 #include "ios/web/public/test/test_web_thread.h"
 #include "net/cert/x509_certificate.h"
 #include "net/http/http_response_headers.h"
 #include "net/test/cert_test_util.h"
 #include "net/test/test_data_directory.h"
@@ skipping 173 matching lines @@
   }
 
   NSString* WaitUntilLoop(bool (^condition)(void)) {
     DCHECK_CURRENTLY_ON(web::WebThread::UI);
     base::Time maxDate = base::Time::Now() + base::TimeDelta::FromSeconds(10);
     while (!condition()) {
       if ([receiver_ error])
         return [receiver_ error];
       if (base::Time::Now() > maxDate)
         return @"Time is up, too slow to go";
-      loop_.RunUntilIdle();
+      base::RunLoop().RunUntilIdle();
       base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(1));
     }
     return nil;
   }
 
   NSString* CheckActive() {
     NSString* message = WaitUntilLoop(^{
       return (receiver_.get()->value_ > 0.0f);
     });
 
@@ skipping 284 matching lines @@
                                   base::Bind(&TwoStartsSSLCallback,
                                              &request_0_called));
   tracker_->OnSSLCertificateError(GetSecureRequest(1), ssl_info, true,
                                   base::Bind(&TwoStartsSSLCallback,
                                              &request_1_called));
   EXPECT_TRUE(request_0_called);
   EXPECT_TRUE(request_1_called);
 }
 
 }  // namespace