Support Promises event-based instrumentation on backend.

Source/core/inspector/InspectorDebuggerAgent.cpp

Index: Source/core/inspector/InspectorDebuggerAgent.cpp
diff --git a/Source/core/inspector/InspectorDebuggerAgent.cpp b/Source/core/inspector/InspectorDebuggerAgent.cpp
index 4eeeba1cadc5a51039ae56c0c637f0a13aaa64d0..7cb6e06f56066c35179973ae3872228593f0c1fd 100644
--- a/Source/core/inspector/InspectorDebuggerAgent.cpp
+++ b/Source/core/inspector/InspectorDebuggerAgent.cpp
@@ -881,6 +881,13 @@ void InspectorDebuggerAgent::didReceiveV8AsyncTaskEvent(ExecutionContext* contex
         ASSERT_NOT_REACHED();
 }
 
+void InspectorDebuggerAgent::didReceiveV8PromiseEvent(ScriptState* scriptState, v8::Handle<v8::Object> promise, v8::Handle<v8::Value> parentPromise, int status)
+{
+    if (!m_promiseTracker.isEnabled())
+        return;
+    m_promiseTracker.didReceiveV8PromiseEvent(scriptState, promise, parentPromise, status);
+}
+
 void InspectorDebuggerAgent::pause(ErrorString*)
 {
     if (m_javaScriptPauseScheduled || isPaused())
@@ -1384,6 +1391,7 @@ void InspectorDebuggerAgent::clear()
     m_scripts.clear();
     m_breakpointIdToDebugServerBreakpointIds.clear();
     m_asyncCallStackTracker.clear();
+    m_promiseTracker.clear();
     m_continueToLocationBreakpointId = String();
     clearBreakDetails();
     m_javaScriptPauseScheduled = false;
@@ -1426,6 +1434,7 @@ void InspectorDebuggerAgent::reset()
     m_scripts.clear();
     m_breakpointIdToDebugServerBreakpointIds.clear();
     m_asyncCallStackTracker.clear();
+    m_promiseTracker.clear();
     if (m_frontend)
         m_frontend->globalObjectCleared();
 }