Add the ability to return descedant event listeners.

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

Index: third_party/WebKit/Source/core/inspector/InspectorDOMDebuggerAgent.h
diff --git a/third_party/WebKit/Source/core/inspector/InspectorDOMDebuggerAgent.h b/third_party/WebKit/Source/core/inspector/InspectorDOMDebuggerAgent.h
index fbab05da7efbcd1fd42ab9c2a017f147adce20a0..d7ebe1aaa0402eb9b7d4241f52472b546d78bba6 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorDOMDebuggerAgent.h
+++ b/third_party/WebKit/Source/core/inspector/InspectorDOMDebuggerAgent.h
@@ -52,12 +52,19 @@ namespace protocol {
 class DictionaryValue;
 }
 
+enum class EventListenerFilter : int {
+    ShowNothing = 0,

[pfeldman, 2016/05/27 21:54:01]

We don't really need nothing as an option.

[dtapuska, 2016/05/27 22:10:53]

It is mainly for comparison. Because this is an enum class you can't compare it
against 0. You need to test something of the same type. 

+    ShowDescendants = 1 << 0,

[pfeldman, 2016/05/27 21:54:01]

These seem to be orthogonal to passive/blocking, we should not use the same set
for them. If that is that is a mast, you should not have 2 entries for
blocking/passive.

[dtapuska, 2016/05/27 22:10:53]

How do you indicate the default. Show me all passive and blocking listeners. 

+    ShowPassive = 1 << 1,
+    ShowBlocking = 1 << 2,
+};
+
 class CORE_EXPORT InspectorDOMDebuggerAgent final
     : public InspectorBaseAgent<InspectorDOMDebuggerAgent, protocol::DOMDebugger::Frontend>
     , public protocol::DOMDebugger::Backend {
     WTF_MAKE_NONCOPYABLE(InspectorDOMDebuggerAgent);
 public:
-    static void eventListenersInfoForTarget(v8::Isolate*, v8::Local<v8::Value>, V8EventListenerInfoList& listeners);
+    static void eventListenersInfoForTarget(v8::Isolate*, v8::Local<v8::Value>, EventListenerFilter filterMask, V8EventListenerInfoList& listeners);
 
     InspectorDOMDebuggerAgent(v8::Isolate*, InspectorDOMAgent*, V8InspectorSession*);
     ~InspectorDOMDebuggerAgent() override;
@@ -72,7 +79,7 @@ public:
     void removeInstrumentationBreakpoint(ErrorString*, const String& eventName) override;
     void setXHRBreakpoint(ErrorString*, const String& url) override;
     void removeXHRBreakpoint(ErrorString*, const String& url) override;
-    void getEventListeners(ErrorString*, const String16& objectId, std::unique_ptr<protocol::Array<protocol::DOMDebugger::EventListener>>* listeners) override;
+    void getEventListeners(ErrorString*, const String16& objectId, const Maybe<bool>& inDescendants, std::unique_ptr<protocol::Array<protocol::DOMDebugger::EventListener>>* listeners) override;
 
     // InspectorInstrumentation API
     void willInsertDOMNode(Node* parent);
@@ -109,7 +116,7 @@ private:
     void didRemoveBreakpoint();
     void setEnabled(bool);
 
-    void eventListeners(v8::Local<v8::Context>, v8::Local<v8::Value>, const String16& objectGroup, protocol::Array<protocol::DOMDebugger::EventListener>* listenersArray);
+    void eventListeners(v8::Local<v8::Context>, v8::Local<v8::Value>, const String16& objectGroup, EventListenerFilter filterMask, protocol::Array<protocol::DOMDebugger::EventListener>* listenersArray);
     std::unique_ptr<protocol::DOMDebugger::EventListener> buildObjectForEventListener(v8::Local<v8::Context>, const V8EventListenerInfo&, const String16& objectGroupId);
 
     v8::Isolate* m_isolate;
@@ -118,6 +125,32 @@ private:
     HeapHashMap<Member<Node>, uint32_t> m_domBreakpoints;
 };
 
+
+inline EventListenerFilter operator& (EventListenerFilter a, EventListenerFilter b)
+{
+    return static_cast<EventListenerFilter>(static_cast<int>(a) & static_cast<int>(b));
+}
+
+inline EventListenerFilter operator| (EventListenerFilter a, EventListenerFilter b)
+{
+    return static_cast<EventListenerFilter>(static_cast<int>(a) | static_cast<int>(b));
+}
+
+inline EventListenerFilter& operator|=(EventListenerFilter& a, EventListenerFilter b)
+{
+    return a = a | b;
+}
+
+inline EventListenerFilter& operator&=(EventListenerFilter& a, EventListenerFilter b)
+{
+    return a = a & b;
+}
+
+inline EventListenerFilter operator~(EventListenerFilter flags)
+{
+    return static_cast<EventListenerFilter>(~static_cast<int>(flags));
+}
+
 } // namespace blink