Make v8::Handle as "deprecated soon"

src/extensions/externalize-string-extension.cc

Index: src/extensions/externalize-string-extension.cc
diff --git a/src/extensions/externalize-string-extension.cc b/src/extensions/externalize-string-extension.cc
index e2213b0bd4b65c2455e8d86a8b911a06eece49d4..aedfb5e93f4fdee654655631a5f887c649924492 100644
--- a/src/extensions/externalize-string-extension.cc
+++ b/src/extensions/externalize-string-extension.cc
@@ -37,9 +37,9 @@ const char* const ExternalizeStringExtension::kSource =
     "native function externalizeString();"
     "native function isOneByteString();";
 
-v8::Handle<v8::FunctionTemplate>
+v8::Local<v8::FunctionTemplate>
 ExternalizeStringExtension::GetNativeFunctionTemplate(
-    v8::Isolate* isolate, v8::Handle<v8::String> str) {
+    v8::Isolate* isolate, v8::Local<v8::String> str) {
   if (strcmp(*v8::String::Utf8Value(str), "externalizeString") == 0) {
     return v8::FunctionTemplate::New(isolate,
                                      ExternalizeStringExtension::Externalize);