Remove deprecated wstring Get(As)String() methods from Value, etc.

chrome/browser/dom_ui/dom_ui.cc

Index: chrome/browser/dom_ui/dom_ui.cc
diff --git a/chrome/browser/dom_ui/dom_ui.cc b/chrome/browser/dom_ui/dom_ui.cc
index 8d441b049a4a6e40a9d67ab8297e4a2095ae6b26..118e2620a931cb7ef423f7eb8935aa4046de4ad4 100644
--- a/chrome/browser/dom_ui/dom_ui.cc
+++ b/chrome/browser/dom_ui/dom_ui.cc
@@ -176,12 +176,13 @@ bool DOMMessageHandler::ExtractIntegerValue(const Value* value, int* out_int) {
   return false;
 }
 
+// TODO(viettrungluu): convert to string16 (or UTF-8 std::string?).
 std::wstring DOMMessageHandler::ExtractStringValue(const Value* value) {
   if (value && value->GetType() == Value::TYPE_LIST) {
     const ListValue* list_value = static_cast<const ListValue*>(value);
-    std::wstring wstring_value;
-    if (list_value->GetString(0, &wstring_value))
-      return wstring_value;
+    string16 string16_value;
+    if (list_value->GetString(0, &string16_value))
+      return UTF16ToWideHack(string16_value);
   }
   return std::wstring();
 }