Omnibox - ClipboardRecentContent - Make Proper Singleton

ios/chrome/browser/ios_chrome_main_parts.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.
 
 #include "ios/chrome/browser/ios_chrome_main_parts.h"
 
 #include "base/base_switches.h"
 #include "base/feature_list.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
@@ skipping 133 matching lines @@
   StartMetricsRecording();
 
   application_context_->PreMainMessageLoopRun();
 
   // ContentSettingsPattern need to be initialized before creating the
   // ChromeBrowserState.
   ContentSettingsPattern::SetNonWildcardDomainNonPortScheme(
       kDummyExtensionScheme);
 
   // Ensure ClipboadRecentContentIOS is created.
-  ClipboardRecentContent::SetInstance(
-      CreateClipboardRecentContentIOS().release());
+  ClipboardRecentContent::SetInstance(CreateClipboardRecentContentIOS());
 
   // Ensure that the browser state is initialized.
   EnsureBrowserStateKeyedServiceFactoriesBuilt();
   ios::ChromeBrowserStateManager* browser_state_manager =
       application_context_->GetChromeBrowserStateManager();
   ios::ChromeBrowserState* last_used_browser_state =
       browser_state_manager->GetLastUsedBrowserState();
 
 #if BUILDFLAG(ENABLE_RLZ)
   // Init the RLZ library. This just schedules a task on the file thread to be
@@ skipping 117 matching lines @@
 
 void IOSChromeMainParts::StartMetricsRecording() {
   bool wifiOnly = local_state_->GetBoolean(prefs::kMetricsReportingWifiOnly);
   bool isConnectionCellular = net::NetworkChangeNotifier::IsConnectionCellular(
       net::NetworkChangeNotifier::GetConnectionType());
   bool mayUpload = !wifiOnly || !isConnectionCellular;
 
   application_context_->GetMetricsServicesManager()->UpdateUploadPermissions(
       mayUpload);
 }