Revert of DevTools: Support async call stacks for FileSystem API (part 1).

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 640fb985a0cab7509e35b33cc9c246248516c9e7..e049395efd94b4131ad867dd810873cbf7ac726b 100644
--- a/Source/core/inspector/AsyncCallStackTracker.h
+++ b/Source/core/inspector/AsyncCallStackTracker.h
@@ -41,7 +41,6 @@
 
 namespace WebCore {
 
-class AsyncFileSystemCallbacks;
 class Event;
 class EventListener;
 class EventTarget;
@@ -104,15 +103,8 @@
     void didKillAllExecutionContextTasks(ExecutionContext*);
     void willPerformExecutionContextTask(ExecutionContext*, ExecutionContextTask*);
 
-    void didEnqueueAsyncFileSystemCallback(ExecutionContext*, AsyncFileSystemCallbacks*, const ScriptValue& callFrames);
-    void didRemoveAsyncFileSystemCallback(ExecutionContext*, AsyncFileSystemCallbacks*);
-    void willHandleAsyncFileSystemCallback(ExecutionContext*, AsyncFileSystemCallbacks*, bool hasMore);
-
     void didEnqueueV8AsyncTask(ExecutionContext*, const String& eventName, int id, const ScriptValue& callFrames);
     void willHandleV8AsyncTask(ExecutionContext*, const String& eventName, int id);
-
-    void willRescheduleAsyncCallChain();
-    void didRescheduleAsyncCallChain();
 
     void didFireAsyncCall();
     void clear();
@@ -132,8 +124,6 @@
     unsigned m_maxAsyncCallStackDepth;
     RefPtr<AsyncCallChain> m_currentAsyncCallChain;
     unsigned m_nestedAsyncCallCount;
-    bool m_rescheduleNextAsyncCallChain;
-    RefPtr<AsyncCallChain> m_rescheduledAsyncCallChain;
     typedef HashMap<ExecutionContext*, ExecutionContextData*> ExecutionContextDataMap;
     ExecutionContextDataMap m_executionContextDataMap;
 };