Replace SetObjectProperty / DefineObjectProperty with less powerful alternatives where relevant.

test/cctest/test-debug.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 97 matching lines @@
     CHECK(isolate->debug()->Load());
     Handle<v8::internal::Context> debug_context =
         isolate->debug()->debug_context();
     debug_context->set_security_token(
         v8::Utils::OpenHandle(*context_)->security_token());
 
     Handle<JSGlobalProxy> global(Handle<JSGlobalProxy>::cast(
         v8::Utils::OpenHandle(*context_->Global())));
     Handle<v8::internal::String> debug_string =
         factory->InternalizeOneByteString(STATIC_CHAR_VECTOR("debug"));
-    v8::internal::Runtime::DefineObjectProperty(global, debug_string,
-        handle(debug_context->global_proxy(), isolate), DONT_ENUM).Check();
+    v8::internal::JSObject::SetOwnPropertyIgnoreAttributes(
+        global, debug_string, handle(debug_context->global_proxy()), DONT_ENUM)
+        .Check();
   }
 
  private:
   v8::HandleScope scope_;
   v8::Local<v8::Context> context_;
 };
 
 
 // --- H e l p e r   F u n c t i o n s
 
@@ skipping 7516 matching lines @@
       "let y = 2;               \n"
       "debugger;                \n"
       "x * y",
       30);
   ExpectInt32(
       "x = 1; y = 2; \n"
       "debugger;"
       "x * y",
       30);
 }