Add space-saving overloads for DictionaryValue::SetXXX...

base/values.h

Index: base/values.h
===================================================================
--- base/values.h	(revision 21162)
+++ base/values.h	(working copy)
@@ -224,10 +224,14 @@
   // Convenience forms of Set().  These methods will replace any existing
   // value at that path, even if it has a different type.
   bool SetBoolean(const std::wstring& path, bool in_value);
+  bool SetBoolean(const wchar_t* path, bool in_value);
   bool SetInteger(const std::wstring& path, int in_value);
+  bool SetInteger(const wchar_t* path, int in_value);
   bool SetReal(const std::wstring& path, double in_value);
   bool SetString(const std::wstring& path, const std::string& in_value);
+  bool SetString(const wchar_t* path, const std::string& in_value);
   bool SetString(const std::wstring& path, const std::wstring& in_value);
+  bool SetString(const wchar_t* path, const std::wstring& in_value);
 
   // Gets the Value associated with the given path starting from this object.
   // A path has the form "<key>" or "<key>.<key>.[...]", where "." indexes