remove most uses of raw handle constructors

test/cctest/test-declarative-accessors.cc

 // Copyright 2013 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 102 matching lines @@
 static void VerifyRead(v8::Handle<v8::DeclaredAccessorDescriptor> descriptor,
                        int internal_field,
                        void* internal_object,
                        v8::Handle<v8::Value> expected_value) {
   LocalContext local_context;
   v8::HandleScope scope(local_context->GetIsolate());
   v8::Handle<v8::Context> context = local_context.local();
   CreateConstructor(context, "Accessible", internal_field, "x", descriptor);
   // Setup object.
   CompileRun("var accessible = new Accessible();");
-  v8::Local<v8::Object> obj(
-      v8::Object::Cast(*context->Global()->Get(v8_str("accessible"))));
+  v8::Local<v8::Object> obj = v8::Local<v8::Object>::Cast(
+      context->Global()->Get(v8_str("accessible")));
   obj->SetAlignedPointerInInternalField(internal_field, internal_object);
   bool added_accessor;
   added_accessor = obj->SetAccessor(v8_str("y"), descriptor);
   CHECK(added_accessor);
   added_accessor = obj->SetAccessor(v8_str("13"), descriptor);
   CHECK(added_accessor);
   // Test access from template getter.
   v8::Local<v8::Value> value;
   value = CompileRun("accessible.x;");
   CHECK_EQ(expected_value, value);
@@ skipping 156 matching lines @@
   int internal_field = 0;
   v8::Handle<v8::DeclaredAccessorDescriptor> descriptor =
       OOD::NewInternalFieldDereference(helper.isolate_, internal_field)
       ->NewRawShift(helper.isolate_, index*kPointerSize)
       ->NewHandleDereference(helper.isolate_);
   HandleArray* array = *helper.handle_array_;
   v8::Handle<v8::String> expected = v8_str("whatever");
   array->handles_[index].Reset(helper.isolate_, expected);
   VerifyRead(descriptor, internal_field, array, expected);
 }