Don't use base::MessageLoop::{Quit,QuitClosure} in chrome/

chrome/browser/extensions/app_data_migrator_unittest.cc

 // Copyright 2015 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 <string>
 
 #include "base/callback_forward.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "chrome/browser/extensions/app_data_migrator.h"
 #include "chrome/browser/extensions/extension_special_storage_policy.h"
@@ skipping 87 matching lines @@
                                     ListBuilder().Append("unlimitedStorage")))
               .Build();
   }
   return app;
 }
 
 void MigrationCallback() {
 }
 
 void DidWrite(base::File::Error status, int64 bytes, bool complete) {
-  base::MessageLoop::current()->Quit();
+  base::MessageLoop::current()->QuitWhenIdle();
 }
 
 void DidCreate(base::File::Error status) {
 }
 
 void DidOpenFileSystem(const GURL& root,
                        const std::string& name,
                        base::File::Error result) {
 }
 
@@ skipping 57 matching lines @@
   file.Read(0, buffer.get(), 14);
   buffer.get()[14] = 0;
 
   std::string expected = "Hello, world!\n";
   std::string actual = buffer.get();
   EXPECT_EQ(expected, actual);
 
   file.Close();
   if (!on_close_callback.is_null())
     on_close_callback.Run();
-  base::MessageLoop::current()->Quit();
+  base::MessageLoop::current()->QuitWhenIdle();
 }
 
 void VerifyTestFilesMigrated(content::StoragePartition* new_partition,
                              const Extension* new_ext) {
   GURL extension_url =
       extensions::Extension::GetBaseURLFromExtensionId(new_ext->id());
   storage::FileSystemContext* new_fs_context =
       new_partition->GetFileSystemContext();
 
   OpenFileSystems(new_fs_context, extension_url);
@@ skipping 66 matching lines @@
   content::StoragePartition* new_partition =
       content::BrowserContext::GetStoragePartitionForSite(profile_.get(),
                                                           extension_url);
 
   ASSERT_NE(new_partition->GetPath(), default_partition_->GetPath());
 
   VerifyTestFilesMigrated(new_partition, new_ext.get());
 }
 
 }  // namespace extensions