Add thread affinity and ASSERT() for same-thread restriction to WTF::Function

third_party/WebKit/Source/core/workers/WorkerThread.cpp

Index: third_party/WebKit/Source/core/workers/WorkerThread.cpp
diff --git a/third_party/WebKit/Source/core/workers/WorkerThread.cpp b/third_party/WebKit/Source/core/workers/WorkerThread.cpp
index bb5bb46c7708830080177d81d4d618f2c919daf0..a9044aacc5ef22c15338c21f7be405be534c2989 100644
--- a/third_party/WebKit/Source/core/workers/WorkerThread.cpp
+++ b/third_party/WebKit/Source/core/workers/WorkerThread.cpp
@@ -122,7 +122,7 @@ void WorkerThread::performTask(PassOwnPtr<ExecutionContextTask> task, bool isIns
         InspectorInstrumentation::didPerformExecutionContextTask(globalScope);
 }
 
-PassOwnPtr<Closure> WorkerThread::createWorkerThreadTask(PassOwnPtr<ExecutionContextTask> task, bool isInstrumented)
+PassOwnPtr<CrossThreadClosure> WorkerThread::createWorkerThreadTask(PassOwnPtr<ExecutionContextTask> task, bool isInstrumented)
 {
     if (isInstrumented)
         isInstrumented = !task->taskNameForInstrumentation().isEmpty();
@@ -137,7 +137,7 @@ PassOwnPtr<Closure> WorkerThread::createWorkerThreadTask(PassOwnPtr<ExecutionCon
 class WorkerThread::DebuggerTaskQueue {
     WTF_MAKE_NONCOPYABLE(DebuggerTaskQueue);
 public:
-    using Task = WTF::Closure;
+    using Task = WTF::CrossThreadClosure;
     using Result = WorkerThread::TaskQueueResult;
 
     DebuggerTaskQueue() { }
@@ -494,7 +494,7 @@ void WorkerThread::terminateV8Execution()
     m_isolate->TerminateExecution();
 }
 
-void WorkerThread::appendDebuggerTask(PassOwnPtr<Closure> task)
+void WorkerThread::appendDebuggerTask(PassOwnPtr<CrossThreadClosure> task)
 {
     {
         MutexLocker lock(m_threadStateMutex);
@@ -509,7 +509,7 @@ WorkerThread::TaskQueueResult WorkerThread::runDebuggerTask(WaitMode waitMode)
     ASSERT(isCurrentThread());
     TaskQueueResult result;
     double absoluteTime = DebuggerTaskQueue::infiniteTime();
-    OwnPtr<Closure> task;
+    OwnPtr<CrossThreadClosure> task;
     {
         if (waitMode == DontWaitForTask)
             absoluteTime = 0.0;