Add GetProperty/GetElement to JSReceiver and use it where possible

test/cctest/heap/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 5986 matching lines @@
   FLAG_gc_interval = -1;
   CcTest::InitializeVM();
   v8::HandleScope scope(CcTest::isolate());
   v8::TryCatch try_catch(CcTest::isolate());
   CompileRun("throw new Error();");
   CHECK(try_catch.HasCaught());
   Isolate* isolate = CcTest::i_isolate();
   Handle<Object> exception = v8::Utils::OpenHandle(*try_catch.Exception());
   Handle<Name> key = isolate->factory()->stack_trace_symbol();
   Handle<Object> stack_trace =
-      JSObject::GetProperty(exception, key).ToHandleChecked();
+      Object::GetProperty(exception, key).ToHandleChecked();
   Handle<Object> code =
       Object::GetElement(isolate, stack_trace, 3).ToHandleChecked();
   CHECK(code->IsCode());
 
   isolate->heap()->CollectAllAvailableGarbage("stack trace preprocessing");
 
   Handle<Object> pos =
       Object::GetElement(isolate, stack_trace, 3).ToHandleChecked();
   CHECK(pos->IsSmi());
 
@@ skipping 585 matching lines @@
       heap->RightTrimFixedArray<Heap::CONCURRENT_TO_SWEEPER>(arrays[j], N - 1);
     }
   }
   // Force allocation from the free list.
   heap->set_force_oom(true);
   heap->CollectGarbage(OLD_SPACE);
 }
 
 }  // namespace internal
 }  // namespace v8