Propagate error/exception information for rejected Promises in Service workers.

Source/modules/serviceworkers/WaitUntilObserver.cpp

Index: Source/modules/serviceworkers/WaitUntilObserver.cpp
diff --git a/Source/modules/serviceworkers/WaitUntilObserver.cpp b/Source/modules/serviceworkers/WaitUntilObserver.cpp
index f3ca24703a470407c78dfe966aa11ff0dfef0776..42f6cc7adcd2d4b1ba66d29d555e06a868dce4e1 100644
--- a/Source/modules/serviceworkers/WaitUntilObserver.cpp
+++ b/Source/modules/serviceworkers/WaitUntilObserver.cpp
@@ -9,14 +9,22 @@
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/V8Binding.h"
+#include "bindings/core/v8/V8ErrorEvent.h"
 #include "core/dom/ExecutionContext.h"
+#include "core/events/ErrorEvent.h"
 #include "platform/NotImplemented.h"
 #include "public/platform/WebServiceWorkerEventResult.h"
 #include "wtf/Assertions.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
+#include "core/workers/WorkerGlobalScope.h"
+#include "core/workers/WorkerThread.h"
+#include "core/workers/WorkerReportingProxy.h"
+#include "core/dom/ExecutionContext.h"
 #include <v8.h>
 
+#include "base/logging.h"
+
 namespace blink {
 
 class WaitUntilObserver::ThenFunction FINAL : public ScriptFunction {
@@ -95,8 +103,17 @@ WaitUntilObserver::WaitUntilObserver(ExecutionContext* context, EventType type,
 
 void WaitUntilObserver::reportError(const ScriptValue& value)
 {
-    // FIXME: Propagate error message to the client for onerror handling.
-    notImplemented();
+    VLOG(1) <<__FUNCTION__;
+    if(V8ErrorEvent::hasInstance(value.v8Value(), toIsolate(executionContext()))) {
+        ErrorEvent* errEvent = V8ErrorEvent::toImplWithTypeCheck(toIsolate(executionContext()), value.v8Value());
+        toWorkerGlobalScope(executionContext())->thread()->workerReportingProxy()
+        .reportException(errEvent->message(),
+                        errEvent->lineno(),
+                        errEvent->colno(),
+                        errEvent->filename());
+        VLOG(1) << errEvent->message().ascii().data();
+        VLOG(1) << errEvent->filename().ascii().data()<< " : "<< errEvent->lineno() << " : " << errEvent->colno();
+    }
 
     m_hasError = true;
 }