Pure pedantry: Replace all ".size() == 0" with ".empty()".

chrome_frame/policy_settings.cc

Index: chrome_frame/policy_settings.cc
diff --git a/chrome_frame/policy_settings.cc b/chrome_frame/policy_settings.cc
index a6741a3b5123f3a2b6fed68f342d8bd45bfd350d..97c08107bf57eb4f56949d9fe5b9f3b49c2efdc9 100644
--- a/chrome_frame/policy_settings.cc
+++ b/chrome_frame/policy_settings.cc
@@ -110,7 +110,7 @@ void PolicySettings::ReadContentTypeSetting(
   sub_key += ASCIIToWide(policy::key::kChromeFrameContentTypes);
 
   content_type_list->clear();
-  for (int i = 0; i < arraysize(kRootKeys) && content_type_list->size() == 0;
+  for (int i = 0; i < arraysize(kRootKeys) && content_type_list->empty();
        ++i) {
     EnumerateKeyValues(kRootKeys[i], sub_key.c_str(), content_type_list);
   }