Remove calls to deprecated MessageLoop methods in content.

content/browser/storage_partition_impl_unittest.cc

 // Copyright 2013 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 <stddef.h>
 #include <stdint.h>
 
 #include "base/files/file_util.h"
 #include "base/location.h"
 #include "base/macros.h"
@@ skipping 82 matching lines @@
 
 class AwaitCompletionHelper {
  public:
   AwaitCompletionHelper() : start_(false), already_quit_(false) {}
   virtual ~AwaitCompletionHelper() {}
 
   void BlockUntilNotified() {
     if (!already_quit_) {
       DCHECK(!start_);
       start_ = true;
-      base::MessageLoop::current()->Run();
+      base::RunLoop().Run();
     } else {
       DCHECK(!start_);
       already_quit_ = false;
     }
   }
 
   void Notify() {
     if (start_) {
       DCHECK(!already_quit_);
       base::MessageLoop::current()->QuitWhenIdle();
@@ skipping 1199 matching lines @@
       CanonicalCookie::Create(url2, "A=B;domain=.example.com", now, options));
   invalid_cookies.push_back(CanonicalCookie::Create(url3, "A=B", now, options));
 
   for (const auto& cookie : valid_cookies)
     EXPECT_TRUE(predicate.Run(*cookie)) << cookie->DebugString();
   for (const auto& cookie : invalid_cookies)
     EXPECT_FALSE(predicate.Run(*cookie)) << cookie->DebugString();
 }
 
 }  // namespace content