Add the ability to return descedant event listeners.

third_party/WebKit/Source/core/inspector/ThreadDebugger.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ThreadDebugger_h
 #define ThreadDebugger_h
 
 #include "core/CoreExport.h"
 #include "platform/Timer.h"
 #include "platform/v8_inspector/public/V8Debugger.h"
@@ skipping 11 matching lines @@
 class CORE_EXPORT ThreadDebugger : public V8DebuggerClient {
     WTF_MAKE_NONCOPYABLE(ThreadDebugger);
 public:
     explicit ThreadDebugger(v8::Isolate*);
     ~ThreadDebugger() override;
 
     static void willExecuteScript(v8::Isolate*, int scriptId);
     static void didExecuteScript(v8::Isolate*);
 
     // V8DebuggerClient implementation.
-    void eventListeners(v8::Local<v8::Value>, V8EventListenerInfoList&) override;
+    void eventListeners(v8::Local<v8::Value>, unsigned filterMask, V8EventListenerInfoList&) override;
     String16 valueSubtype(v8::Local<v8::Value>) override;
     bool formatAccessorsAsProperties(v8::Local<v8::Value>) override;
     bool isExecutionAllowed() override;
     double currentTimeMS() override;
     bool isInspectableHeapObject(v8::Local<v8::Object>) override;
     void reportMessageToConsole(v8::Local<v8::Context>, MessageType, MessageLevel, const String16& message, const v8::FunctionCallbackInfo<v8::Value>* arguments, unsigned skipArgumentCount, int maxStackSize) final;
     void consoleTime(const String16& title) override;
     void consoleTimeEnd(const String16& title) override;
     void consoleTimeStamp(const String16& title) override;
     int startRepeatingTimer(double, PassOwnPtr<V8DebuggerClient::TimerCallback>) override;
     void cancelTimer(int) override;
 
     V8Debugger* debugger() const { return m_debugger.get(); }
     virtual bool isWorker() { return true; }
 protected:
     virtual void reportMessageToConsole(v8::Local<v8::Context>, ConsoleMessage*) = 0;
     void onTimer(Timer<ThreadDebugger>*);
 
     v8::Isolate* m_isolate;
     OwnPtr<V8Debugger> m_debugger;
     HashMap<int, OwnPtr<Timer<ThreadDebugger>>> m_timers;
     HashMap<Timer<ThreadDebugger>*, OwnPtr<V8DebuggerClient::TimerCallback>> m_timerCallbacks;
     int m_lastTimerId;
 };
 
 } // namespace blink
 
 #endif // ThreadDebugger_h