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

chrome/browser/chromeos/extensions/external_cache.cc

Index: chrome/browser/chromeos/extensions/external_cache.cc
diff --git a/chrome/browser/chromeos/extensions/external_cache.cc b/chrome/browser/chromeos/extensions/external_cache.cc
index 3e19c658fb94a4a9f0d82e40c0706c032b78f591..cee854493368afacdeb0e6492f41cf85970d6f1b 100644
--- a/chrome/browser/chromeos/extensions/external_cache.cc
+++ b/chrome/browser/chromeos/extensions/external_cache.cc
@@ -338,9 +338,9 @@ void ExternalCache::OnCacheUpdated(scoped_ptr<base::DictionaryValue> prefs) {
               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());
       }
     }
   }