remove most uses of raw handle constructors

test/cctest/test-log.cc

 // Copyright 2006-2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 387 matching lines @@
 
 TEST(LogCallbacks) {
   ScopedLoggerInitializer initialize_logger(false);
   Logger* logger = initialize_logger.logger();
 
   v8::Local<v8::FunctionTemplate> obj =
       v8::Local<v8::FunctionTemplate>::New(v8::Isolate::GetCurrent(),
                                            v8::FunctionTemplate::New());
   obj->SetClassName(v8_str("Obj"));
   v8::Handle<v8::ObjectTemplate> proto = obj->PrototypeTemplate();
-  v8::Local<v8::Signature> signature =
-      v8::Signature::New(v8::Handle<v8::FunctionTemplate>(*obj));
+  v8::Local<v8::Signature> signature = v8::Signature::New(obj);
   proto->Set(v8_str("method1"),
              v8::FunctionTemplate::New(ObjMethod1,
                                        v8::Handle<v8::Value>(),
                                        signature),
              static_cast<v8::PropertyAttribute>(v8::DontDelete));
 
   initialize_logger.env()->Global()->Set(v8_str("Obj"), obj->GetFunction());
   CompileRun("Obj.prototype.method1.toString();");
 
   logger->LogCompiledFunctions();
@@ skipping 142 matching lines @@
     v8::Local<v8::String> s = result->ToString();
     i::ScopedVector<char> data(s->Utf8Length() + 1);
     CHECK_NE(NULL, data.start());
     s->WriteUtf8(data.start());
     printf("%s\n", data.start());
     // Make sure that our output is written prior crash due to CHECK failure.
     fflush(stdout);
     CHECK(false);
   }
 }