Remove DevTools instrumentation of Blink promises.

Source/core/inspector/AsyncCallStackTracker.cpp

Index: Source/core/inspector/AsyncCallStackTracker.cpp
diff --git a/Source/core/inspector/AsyncCallStackTracker.cpp b/Source/core/inspector/AsyncCallStackTracker.cpp
index 473d65e803d271216a1ef44625a3d09ec9464e93..572e56ff0d53233c8541c6d47819f35aeb58d6f5 100644
--- a/Source/core/inspector/AsyncCallStackTracker.cpp
+++ b/Source/core/inspector/AsyncCallStackTracker.cpp
@@ -48,8 +48,6 @@ static const char setIntervalName[] = "setInterval";
 static const char requestAnimationFrameName[] = "requestAnimationFrame";
 static const char xhrSendName[] = "XMLHttpRequest.send";
 static const char enqueueMutationRecordName[] = "Mutation";
-static const char promiseResolved[] = "Promise.resolve";
-static const char promiseRejected[] = "Promise.reject";
 
 }
 
@@ -133,7 +131,6 @@ public:
     HashMap<EventTarget*, EventListenerAsyncCallChainVectorHashMap> m_eventTargetCallChains;
     HashMap<EventTarget*, RefPtr<AsyncCallChain> > m_xhrCallChains;
     HashMap<MutationObserver*, RefPtr<AsyncCallChain> > m_mutationObserverCallChains;
-    HashMap<ExecutionContextTask*, RefPtr<AsyncCallChain> > m_promiseTaskCallChains;
 };
 
 static XMLHttpRequest* toXmlHttpRequest(EventTarget* eventTarget)
@@ -369,30 +366,6 @@ void AsyncCallStackTracker::willDeliverMutationRecords(ExecutionContext* context
         setCurrentAsyncCallChain(nullptr);
 }
 
-void AsyncCallStackTracker::didPostPromiseTask(ExecutionContext* context, ExecutionContextTask* task, bool isResolved, const ScriptValue& callFrames)
-{
-    ASSERT(context);
-    ASSERT(isEnabled());
-    if (validateCallFrames(callFrames)) {
-        ExecutionContextData* data = createContextDataIfNeeded(context);
-        data->m_promiseTaskCallChains.set(task, createAsyncCallChain(isResolved ? promiseResolved : promiseRejected, callFrames));
-    } else if (m_currentAsyncCallChain) {
-        // Propagate async call stack to the re-posted task to update a derived Promise.
-        ExecutionContextData* data = createContextDataIfNeeded(context);
-        data->m_promiseTaskCallChains.set(task, m_currentAsyncCallChain);
-    }
-}
-
-void AsyncCallStackTracker::willPerformPromiseTask(ExecutionContext* context, ExecutionContextTask* task)
-{
-    ASSERT(context);
-    ASSERT(isEnabled());
-    if (ExecutionContextData* data = m_executionContextDataMap.get(context))
-        setCurrentAsyncCallChain(data->m_promiseTaskCallChains.take(task));
-    else
-        setCurrentAsyncCallChain(nullptr);
-}
-
 void AsyncCallStackTracker::didFireAsyncCall()
 {
     clearCurrentAsyncCallChain();