Support Promises instrumentation on backend.

Source/core/inspector/InspectorDebuggerAgent.h

Index: Source/core/inspector/InspectorDebuggerAgent.h
diff --git a/Source/core/inspector/InspectorDebuggerAgent.h b/Source/core/inspector/InspectorDebuggerAgent.h
index 243b660e64c0f6fd6b81691311de667c99100989..1825a069b6fa183a73da86bbd5b2061a15b37095 100644
--- a/Source/core/inspector/InspectorDebuggerAgent.h
+++ b/Source/core/inspector/InspectorDebuggerAgent.h
@@ -37,6 +37,7 @@
 #include "core/inspector/ConsoleAPITypes.h"
 #include "core/inspector/InjectedScript.h"
 #include "core/inspector/InspectorBaseAgent.h"
+#include "core/inspector/PromiseOfficer.h"
 #include "core/inspector/ScriptBreakpoint.h"
 #include "core/inspector/ScriptDebugListener.h"
 #include "wtf/Forward.h"
@@ -161,6 +162,9 @@ public:
     void didPostPromiseTask(ExecutionContext*, ExecutionContextTask*, bool isResolved);
     void willPerformPromiseTask(ExecutionContext*, ExecutionContextTask*);
     void didPerformPromiseTask();
+    void didCreatePromise(ExecutionContext*, v8::Handle<v8::Object> promise);
+    void didUpdatePromiseParent(v8::Handle<v8::Object> promise, v8::Handle<v8::Object> parentPromise);
+    void didUpdatePromiseState(v8::Handle<v8::Object> promise, V8PromiseCustom::PromiseState, v8::Handle<v8::Value> result);
     bool canBreakProgram();
     void breakProgram(InspectorFrontend::Debugger::Reason::Enum breakReason, PassRefPtr<JSONObject> data);
     void scriptExecutionBlockedByCSP(const String& directiveText);
@@ -248,6 +252,7 @@ private:
     bool m_skipAllPauses;
     OwnPtr<ScriptRegexp> m_cachedSkipStackRegExp;
     AsyncCallStackTracker m_asyncCallStackTracker;
+    PromiseOfficer m_promiseOfficer;
 };
 
 } // namespace WebCore