Make v8::Handle as "deprecated soon"

src/extensions/free-buffer-extension.h

Index: src/extensions/free-buffer-extension.h
diff --git a/src/extensions/free-buffer-extension.h b/src/extensions/free-buffer-extension.h
index bccf760cc212c219ec1c8792116ddd2a65832830..d62ed02b8627c74150029bc7016d0e2abcbe1ef6 100644
--- a/src/extensions/free-buffer-extension.h
+++ b/src/extensions/free-buffer-extension.h
@@ -14,9 +14,8 @@ class FreeBufferExtension : public v8::Extension {
  public:
   FreeBufferExtension()
       : v8::Extension("v8/free-buffer", "native function freeBuffer();") {}
-  virtual v8::Handle<v8::FunctionTemplate> GetNativeFunctionTemplate(
-      v8::Isolate* isolate,
-      v8::Handle<v8::String> name);
+  virtual v8::Local<v8::FunctionTemplate> GetNativeFunctionTemplate(
+      v8::Isolate* isolate, v8::Local<v8::String> name);
   static void FreeBuffer(const v8::FunctionCallbackInfo<v8::Value>& args);
 };