first step to remove unsafe handles

test/cctest/test-alloc.cc

Index: test/cctest/test-alloc.cc
diff --git a/test/cctest/test-alloc.cc b/test/cctest/test-alloc.cc
index d71247c500976eb68c0ee1cc724e8a2d5b34f7bd..c20a08d3ed9c9c3314b88db32c5551faaf2a20fe 100644
--- a/test/cctest/test-alloc.cc
+++ b/test/cctest/test-alloc.cc
@@ -95,8 +95,8 @@ static Handle<Object> Test() {
 
 
 TEST(StressHandles) {
-  v8::Persistent<v8::Context> env = v8::Context::New();
-  v8::HandleScope scope(env->GetIsolate());
+  v8::HandleScope scope(v8::Isolate::GetCurrent());
+  v8::Handle<v8::Context> env = v8::Context::New(v8::Isolate::GetCurrent());
   env->Enter();
   Handle<Object> o = Test();
   CHECK(o->IsSmi() && Smi::cast(*o)->value() == 42);
@@ -117,8 +117,8 @@ const AccessorDescriptor kDescriptor = {
 
 
 TEST(StressJS) {
-  v8::Persistent<v8::Context> env = v8::Context::New();
-  v8::HandleScope scope(env->GetIsolate());
+  v8::HandleScope scope(v8::Isolate::GetCurrent());
+  v8::Handle<v8::Context> env = v8::Context::New(v8::Isolate::GetCurrent());
   env->Enter();
   Handle<JSFunction> function =
       FACTORY->NewFunction(FACTORY->function_string(), FACTORY->null_value());