Revert of [handles] Sanitize Handle and friends.

test/cctest/test-heap.cc

 // Copyright 2012 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 955 matching lines @@
   delete[] str;
 
   // Add a Map object to look for.
   objs[next_objs_index++] = Handle<Map>(HeapObject::cast(*objs[0])->map());
 
   CHECK_EQ(objs_count, next_objs_index);
   CHECK_EQ(objs_count, ObjectsFoundInHeap(CcTest::heap(), objs, objs_count));
 }
 
 
+TEST(EmptyHandleEscapeFrom) {
+  CcTest::InitializeVM();
+
+  v8::HandleScope scope(CcTest::isolate());
+  Handle<JSObject> runaway;
+
+  {
+      v8::EscapableHandleScope nested(CcTest::isolate());
+      Handle<JSObject> empty;
+      runaway = empty.EscapeFrom(&nested);
+  }
+
+  CHECK(runaway.is_null());
+}
+
+
 static int LenFromSize(int size) {
   return (size - FixedArray::kHeaderSize) / kPointerSize;
 }
 
 
 TEST(Regression39128) {
   // Test case for crbug.com/39128.
   CcTest::InitializeVM();
   Isolate* isolate = CcTest::i_isolate();
   TestHeap* heap = CcTest::test_heap();
@@ skipping 5051 matching lines @@
                                  array->address(),
                                  array->address() + array->Size());
   DCHECK(reinterpret_cast<void*>(buffer->Get(1)) ==
          HeapObject::RawField(heap->empty_fixed_array(),
                               FixedArrayBase::kLengthOffset));
   DCHECK(reinterpret_cast<void*>(buffer->Get(2)) ==
          HeapObject::RawField(heap->empty_fixed_array(),
                               FixedArrayBase::kLengthOffset));
   delete buffer;
 }