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..b18588e3bd8f79aced0bb39376adcfb142c1539e 100644
--- a/Source/core/inspector/InspectorDebuggerAgent.cpp
+++ b/Source/core/inspector/InspectorDebuggerAgent.cpp
@@ -881,6 +881,27 @@ void InspectorDebuggerAgent::didReceiveV8AsyncTaskEvent(ExecutionContext* contex
         ASSERT_NOT_REACHED();
 }
 
+void InspectorDebuggerAgent::didReceiveV8NewPromiseEvent(ExecutionContext* context, v8::Handle<v8::Object> promise)
+{
+    if (!m_promiseTracker.isEnabled())
+        return;
+    m_promiseTracker.didCreatePromise(context, promise);
+}
+
+void InspectorDebuggerAgent::didReceiveV8UpdatePromiseEvent(ExecutionContext* context, v8::Handle<v8::Object> promise, int status, v8::Handle<v8::Value> value)
+{
+    if (!m_promiseTracker.isEnabled())
+        return;
+    m_promiseTracker.didUpdatePromiseStatus(context, promise, status, value);
+}
+
+void InspectorDebuggerAgent::didReceiveV8ChainPromiseEvent(ExecutionContext* context, v8::Handle<v8::Object> promise, v8::Handle<v8::Object> parentPromise)
+{
+    if (!m_promiseTracker.isEnabled())
+        return;
+    m_promiseTracker.didUpdatePromiseParent(context, promise, parentPromise);
+}
+
 void InspectorDebuggerAgent::pause(ErrorString*)
 {
     if (m_javaScriptPauseScheduled || isPaused())
@@ -1384,6 +1405,7 @@ void InspectorDebuggerAgent::clear()
     m_scripts.clear();
     m_breakpointIdToDebugServerBreakpointIds.clear();
     m_asyncCallStackTracker.clear();
+    m_promiseTracker.clear();
     m_continueToLocationBreakpointId = String();
     clearBreakDetails();
     m_javaScriptPauseScheduled = false;
@@ -1426,6 +1448,7 @@ void InspectorDebuggerAgent::reset()
     m_scripts.clear();
     m_breakpointIdToDebugServerBreakpointIds.clear();
     m_asyncCallStackTracker.clear();
+    m_promiseTracker.clear();
     if (m_frontend)
         m_frontend->globalObjectCleared();
 }