Remove DevTools instrumentation of Blink promises.

Source/core/inspector/AsyncCallStackTracker.h

Index: Source/core/inspector/AsyncCallStackTracker.h
diff --git a/Source/core/inspector/AsyncCallStackTracker.h b/Source/core/inspector/AsyncCallStackTracker.h
index 2ccb4fb9168403bf574234e5ee685062e9940e7c..cf9e677cabc776f513eeba87fb2890245ff84aa5 100644
--- a/Source/core/inspector/AsyncCallStackTracker.h
+++ b/Source/core/inspector/AsyncCallStackTracker.h
@@ -44,7 +44,6 @@ namespace WebCore {
 class EventListener;
 class EventTarget;
 class ExecutionContext;
-class ExecutionContextTask;
 class MutationObserver;
 class XMLHttpRequest;
 
@@ -100,9 +99,6 @@ public:
     void didClearAllMutationRecords(ExecutionContext*, MutationObserver*);
     void willDeliverMutationRecords(ExecutionContext*, MutationObserver*);
 
-    void didPostPromiseTask(ExecutionContext*, ExecutionContextTask*, bool isResolved, const ScriptValue& callFrames);
-    void willPerformPromiseTask(ExecutionContext*, ExecutionContextTask*);
-
     void didFireAsyncCall();
     void clear();