Remove support for Object.observe

test/cctest/test-debug.cc

Index: test/cctest/test-debug.cc
diff --git a/test/cctest/test-debug.cc b/test/cctest/test-debug.cc
index 192dce7b9f635fa9c7f421bf2729bb3e1244635f..cfe63f216d599a5231f3332e786d599f9cc0cd91 100644
--- a/test/cctest/test-debug.cc
+++ b/test/cctest/test-debug.cc
@@ -7882,37 +7882,6 @@ TEST(DebugPromiseRejectedByCallback) {
 }
 
 
-TEST(DebugBreakOnExceptionInObserveCallback) {
-  i::FLAG_harmony_object_observe = true;
-  DebugLocalContext env;
-  v8::Isolate* isolate = env->GetIsolate();
-  v8::HandleScope scope(isolate);
-  v8::Debug::SetDebugEventListener(isolate, &DebugEventCountException);
-  v8::Local<v8::Context> context = env.context();
-  // Break on uncaught exception
-  ChangeBreakOnException(false, true);
-  exception_event_counter = 0;
-
-  v8::Local<v8::FunctionTemplate> fun =
-      v8::FunctionTemplate::New(isolate, ThrowCallback);
-  CHECK(env->Global()
-            ->Set(context, v8_str("fun"),
-                  fun->GetFunction(context).ToLocalChecked())
-            .FromJust());
-
-  CompileRun(
-      "var obj = {};"
-      "var callbackRan = false;"
-      "Object.observe(obj, function() {"
-      "   callbackRan = true;"
-      "   throw Error('foo');"
-      "});"
-      "obj.prop = 1");
-  CHECK(CompileRun("callbackRan")->BooleanValue(context).FromJust());
-  CHECK_EQ(1, exception_event_counter);
-}
-
-
 static void DebugHarmonyScopingListener(
     const v8::Debug::EventDetails& event_details) {
   v8::DebugEvent event = event_details.GetEvent();