Support Promises instrumentation on backend.

Source/core/inspector/PromiseTracker.h

Index: Source/core/inspector/PromiseTracker.h
diff --git a/Source/modules/serviceworkers/ServiceWorkerGlobalScopeClient.h b/Source/core/inspector/PromiseTracker.h
similarity index 51%
copy from Source/modules/serviceworkers/ServiceWorkerGlobalScopeClient.h
copy to Source/core/inspector/PromiseTracker.h
index 4b01763f0c3fd90706e5dd6b34bc2665b9cc23cb..150930d7e361dfd1b5df6a8e47963ffecfa714c1 100644
--- a/Source/modules/serviceworkers/ServiceWorkerGlobalScopeClient.h
+++ b/Source/core/inspector/PromiseTracker.h
@@ -28,37 +28,60 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef ServiceWorkerGlobalScopeClient_h
-#define ServiceWorkerGlobalScopeClient_h
+#ifndef PromiseTracker_h
+#define PromiseTracker_h
 
-#include "core/workers/WorkerClients.h"
-#include "wtf/Forward.h"
+#include "bindings/v8/custom/V8PromiseCustom.h"
+#include "bindings/v8/ScriptObjectTraits.h"
+#include "core/inspector/ScriptCallStack.h"
+#include "wtf/HashMap.h"
 #include "wtf/Noncopyable.h"
+#include "wtf/RefPtr.h"
 
 namespace WebCore {
 
 class ExecutionContext;
-class Response;
-class WorkerClients;
 
-class ServiceWorkerGlobalScopeClient : public Supplement<WorkerClients> {
-    WTF_MAKE_NONCOPYABLE(ServiceWorkerGlobalScopeClient);
+class PromiseTracker {
+    WTF_MAKE_NONCOPYABLE(PromiseTracker);
 public:
-    virtual ~ServiceWorkerGlobalScopeClient() { }
+    PromiseTracker() : m_isEnabled(false) { }
 
-    virtual void didHandleInstallEvent(int installEventID) = 0;
-    // A null response means no valid response was provided by the service worker, so fallback to native.
-    virtual void didHandleFetchEvent(int fetchEventID, PassRefPtr<Response> = nullptr) = 0;
+    bool isEnabled() const { return m_isEnabled; }
+    void enable();
+    void disable();
 
-    static const char* supplementName();
-    static ServiceWorkerGlobalScopeClient* from(ExecutionContext*);
+    void clear();
 
-protected:
-    ServiceWorkerGlobalScopeClient() { }
-};
+    void didCreatePromise(const ScriptObject& promise);
+    void didUpdatePromiseParent(const ScriptObject& promise, const ScriptObject& parentPromise);
+    void didUpdatePromiseState(const ScriptObject& promise, V8PromiseCustom::PromiseState, const ScriptValue& result);
+
+private:
+    class PromiseData : public RefCounted<PromiseData> {
+    public:
+        PromiseData(const ScriptObject& promise, const ScriptObject& parentPromise, const ScriptValue& result, V8PromiseCustom::PromiseState state, double timestamp);
+
+        void didSettlePromise(double timestamp);
+
+        ScriptObject m_promise;
+        ScriptObject m_parentPromise;
+        ScriptValue m_result;
+        V8PromiseCustom::PromiseState m_state;
 
-void provideServiceWorkerGlobalScopeClientToWorker(WorkerClients*, PassOwnPtr<ServiceWorkerGlobalScopeClient>);
+        // Time in milliseconds.
+        double m_timeOnCreate;
+        double m_timeOnSettle;
+
+        RefPtr<ScriptCallStack> m_callStackOnCreate;
+        RefPtr<ScriptCallStack> m_callStackOnSettle;
+    };
+
+    bool m_isEnabled;
+    typedef HashMap<ScriptObject, RefPtr<PromiseData>, ScriptObjectHash, ScriptObjectHashTraits> PromiseDataMap;
+    PromiseDataMap m_promiseDataMap;
+};
 
 } // namespace WebCore
 
-#endif // ServiceWorkerGlobalScopeClient_h
+#endif // !defined(PromiseTracker_h)