Make element removal methods in DictionaryValue and ListValue take scoped_ptr's as outparams.

chrome/browser/chromeos/extensions/external_cache.cc

 // Copyright (c) 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 "chrome/browser/chromeos/extensions/external_cache.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
@@ skipping 320 matching lines @@
     }
 
     base::DictionaryValue* cached_entry = NULL;
     if (prefs->GetDictionary(it.key(), &cached_entry)) {
       std::string crx_path;
       if (!downloader_ ||
           cached_entry->GetString(
               extensions::ExternalProviderImpl::kExternalCrx, &crx_path) ||
           cached_entry->HasKey(
               extensions::ExternalProviderImpl::kKeepIfPresent)) {
-        base::Value* value = NULL;
+        scoped_ptr<base::Value> value;
         prefs->Remove(it.key(), &value);
-        cached_extensions_->Set(it.key(), value);
+        cached_extensions_->Set(it.key(), value.release());
       }
     }
   }
   if (downloader_)
     downloader_->StartAllPending();
 
   VLOG(1) << "Updated ExternalCache, there are "
           << cached_extensions_->size() << " extensions cached";
 
   UpdateExtensionLoader();
@@ skipping 77 matching lines @@
 
 void ExternalCache::PostBlockingTask(const tracked_objects::Location& location,
                                      const base::Closure& task) {
   content::BrowserThread::GetBlockingPool()->
       PostSequencedWorkerTaskWithShutdownBehavior(
           worker_pool_token_, location, task,
           base::SequencedWorkerPool::SKIP_ON_SHUTDOWN);
 }
 
 }  // namespace chromeos