Remove base::ScopedPtrHashMap from components/prefs/.

chrome/browser/chromeos/settings/device_settings_provider.cc

Index: chrome/browser/chromeos/settings/device_settings_provider.cc
diff --git a/chrome/browser/chromeos/settings/device_settings_provider.cc b/chrome/browser/chromeos/settings/device_settings_provider.cc
index 05a60523c12afef61c0f311c9208379d6a904a82..423ab66b5fb14591f051740588513db4fa948bc0 100644
--- a/chrome/browser/chromeos/settings/device_settings_provider.cc
+++ b/chrome/browser/chromeos/settings/device_settings_provider.cc
@@ -735,11 +735,11 @@ void DeviceSettingsProvider::UpdateValuesCache(
   // cache so that if somebody actually reads the cache will be already valid.
   std::vector<std::string> notifications;
   // Go through the new values and verify in the old ones.
-  PrefValueMap::iterator iter = new_values_cache.begin();
+  auto iter = new_values_cache.begin();
   for (; iter != new_values_cache.end(); ++iter) {
     const base::Value* old_value;
     if (!values_cache_.GetValue(iter->first, &old_value) ||
-        !old_value->Equals(iter->second)) {
+        !old_value->Equals(iter->second.get())) {
       notifications.push_back(iter->first);
     }
   }