Revert "Extract ContextLifecycleNotifier from ScriptExecutionContext."

Source/core/workers/WorkerContext.cpp

Index: Source/core/workers/WorkerContext.cpp
diff --git a/Source/core/workers/WorkerContext.cpp b/Source/core/workers/WorkerContext.cpp
index 3a6d89108a00270c40a47f4e577dd318b4218434..e6b5010c19fa374b334b2f89a7594a65cde5b354 100644
--- a/Source/core/workers/WorkerContext.cpp
+++ b/Source/core/workers/WorkerContext.cpp
@@ -35,7 +35,6 @@
 #include "bindings/v8/ScriptSourceCode.h"
 #include "bindings/v8/ScriptValue.h"
 #include "core/dom/ActiveDOMObject.h"
-#include "core/dom/ContextLifecycleNotifier.h"
 #include "core/dom/ErrorEvent.h"
 #include "core/dom/Event.h"
 #include "core/dom/MessagePort.h"
@@ -176,6 +175,23 @@ WorkerNavigator* WorkerContext::navigator() const
     return m_navigator.get();
 }
 
+bool WorkerContext::hasPendingActivity() const
+{
+    ActiveDOMObjectsSet::const_iterator activeObjectsEnd = activeDOMObjects().end();
+    for (ActiveDOMObjectsSet::const_iterator iter = activeDOMObjects().begin(); iter != activeObjectsEnd; ++iter) {
+        if ((*iter)->hasPendingActivity())
+            return true;
+    }
+
+    HashSet<MessagePort*>::const_iterator messagePortsEnd = messagePorts().end();
+    for (HashSet<MessagePort*>::const_iterator iter = messagePorts().begin(); iter != messagePortsEnd; ++iter) {
+        if ((*iter)->hasPendingActivity())
+            return true;
+    }
+
+    return false;
+}
+
 void WorkerContext::postTask(PassOwnPtr<Task> task)
 {
     thread()->runLoop().postTask(task);