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 a8cd4ba8b08750ca47e09d0a49a451b0a7b2b600..e03c9674f8bb79d64f496db9599810616af67eb2 100644
--- a/Source/core/inspector/InspectorDebuggerAgent.cpp
+++ b/Source/core/inspector/InspectorDebuggerAgent.cpp
@@ -895,6 +895,13 @@ 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())
@@ -1398,6 +1405,7 @@ void InspectorDebuggerAgent::clear()
     m_scripts.clear();
     m_breakpointIdToDebugServerBreakpointIds.clear();
     m_asyncCallStackTracker.clear();
+    m_promiseTracker.clear();
     m_continueToLocationBreakpointId = String();
     clearBreakDetails();
     m_javaScriptPauseScheduled = false;
@@ -1440,6 +1448,7 @@ void InspectorDebuggerAgent::reset()
     m_scripts.clear();
     m_breakpointIdToDebugServerBreakpointIds.clear();
     m_asyncCallStackTracker.clear();
+    m_promiseTracker.clear();
     if (m_frontend)
         m_frontend->globalObjectCleared();
 }