Switch SupportsUserData uses to use unique_ptr.

ios/web/webui/url_data_manager_ios.cc

 // Copyright 2014 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/webui/url_data_manager_ios.h"
 
 #include <stddef.h>
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
+#include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_util.h"
 #include "base/synchronization/lock.h"
 #include "ios/web/public/browser_state.h"
 #include "ios/web/public/url_data_source_ios.h"
 #include "ios/web/public/web_thread.h"
 #include "ios/web/webui/url_data_manager_ios_backend.h"
 #include "ios/web/webui/url_data_source_ios_impl.h"
 #include "ios/web/webui/web_ui_ios_data_source_impl.h"
 
 namespace web {
 namespace {
 
 const char kURLDataManagerIOSKeyName[] = "url_data_manager";
 
 base::LazyInstance<base::Lock>::Leaky g_delete_lock = LAZY_INSTANCE_INITIALIZER;
 
 URLDataManagerIOS* GetFromBrowserState(BrowserState* browser_state) {
   if (!browser_state->GetUserData(kURLDataManagerIOSKeyName)) {
-    browser_state->SetUserData(kURLDataManagerIOSKeyName,
-                               new URLDataManagerIOS(browser_state));
+    browser_state->SetUserData(
+        kURLDataManagerIOSKeyName,
+        base::MakeUnique<URLDataManagerIOS>(browser_state));
   }
   return static_cast<URLDataManagerIOS*>(
       browser_state->GetUserData(kURLDataManagerIOSKeyName));
 }
 
 }  // namespace
 
 // static
 URLDataManagerIOS::URLDataSources* URLDataManagerIOS::data_sources_ = NULL;
 
@@ skipping 80 matching lines @@
 bool URLDataManagerIOS::IsScheduledForDeletion(
     const URLDataSourceIOSImpl* data_source) {
   base::AutoLock lock(g_delete_lock.Get());
   if (!data_sources_)
     return false;
   return std::find(data_sources_->begin(), data_sources_->end(), data_source) !=
          data_sources_->end();
 }
 
 }  // namespace web