Move StringToLowerASCII to base namespace

extensions/common/message_bundle.cc

Index: extensions/common/message_bundle.cc
diff --git a/extensions/common/message_bundle.cc b/extensions/common/message_bundle.cc
index 00239cc11bd50beb9c51f6f0dee26d993c2ae1af..1340e549935fade3a68f2e70dcdeac801982974e 100644
--- a/extensions/common/message_bundle.cc
+++ b/extensions/common/message_bundle.cc
@@ -76,7 +76,7 @@ bool MessageBundle::Init(const CatalogVector& locale_catalogs,
     base::DictionaryValue* catalog = (*it).get();
     for (base::DictionaryValue::Iterator message_it(*catalog);
          !message_it.IsAtEnd(); message_it.Advance()) {
-      std::string key(StringToLowerASCII(message_it.key()));
+      std::string key(base::StringToLowerASCII(message_it.key()));
       if (!IsValidName(message_it.key()))
         return BadKeyMessage(key, error);
       std::string value;
@@ -191,7 +191,7 @@ bool MessageBundle::GetPlaceholders(const base::DictionaryValue& name_tree,
                                   kContentKey, name_key.c_str());
       return false;
     }
-    (*placeholders)[StringToLowerASCII(content_key)] = content;
+    (*placeholders)[base::StringToLowerASCII(content_key)] = content;
   }
 
   return true;
@@ -250,7 +250,7 @@ bool MessageBundle::ReplaceVariables(const SubstitutionMap& variables,
     if (!IsValidName(var_name))
       continue;
     SubstitutionMap::const_iterator it =
-      variables.find(StringToLowerASCII(var_name));
+      variables.find(base::StringToLowerASCII(var_name));
     if (it == variables.end()) {
       *error = base::StringPrintf("Variable %s%s%s used but not defined.",
                                   var_begin_delimiter.c_str(),
@@ -298,7 +298,7 @@ std::string MessageBundle::GetL10nMessage(const std::string& name) const {
 std::string MessageBundle::GetL10nMessage(const std::string& name,
                                           const SubstitutionMap& dictionary) {
   SubstitutionMap::const_iterator it =
-    dictionary.find(StringToLowerASCII(name));
+      dictionary.find(base::StringToLowerASCII(name));
   if (it != dictionary.end()) {
     return it->second;
   }