Worker: Introduce per-global-scope task scheduler

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

Index: third_party/WebKit/Source/core/workers/InProcessWorkerMessagingProxy.cpp
diff --git a/third_party/WebKit/Source/core/workers/InProcessWorkerMessagingProxy.cpp b/third_party/WebKit/Source/core/workers/InProcessWorkerMessagingProxy.cpp
index ade6bfe80569dacf8486ee94c9e9cd0af9884f93..1077edd1323c327c93c0fe362ffcf0601fff1aee 100644
--- a/third_party/WebKit/Source/core/workers/InProcessWorkerMessagingProxy.cpp
+++ b/third_party/WebKit/Source/core/workers/InProcessWorkerMessagingProxy.cpp
@@ -27,8 +27,10 @@
 
 #include "core/workers/InProcessWorkerMessagingProxy.h"
 
+#include <memory>
 #include "core/dom/Document.h"
 #include "core/dom/SecurityContext.h"
+#include "core/dom/TaskRunnerHelper.h"
 #include "core/events/ErrorEvent.h"
 #include "core/events/MessageEvent.h"
 #include "core/frame/LocalFrame.h"
@@ -45,7 +47,6 @@
 #include "platform/CrossThreadFunctional.h"
 #include "platform/WebTaskRunner.h"
 #include "wtf/WTF.h"
-#include <memory>
 
 namespace blink {
 
@@ -148,7 +149,8 @@ void InProcessWorkerMessagingProxy::postMessageToWorkerGlobalScope(
         crossThreadUnretained(&workerObjectProxy()), std::move(message),
         WTF::passed(std::move(channels)),
         crossThreadUnretained(workerThread()));
-    workerThread()->postTask(BLINK_FROM_HERE, std::move(task));
+    TaskRunnerHelper::get(TaskType::PostedMessage, workerThread())
+        ->postTask(BLINK_FROM_HERE, std::move(task));
   } else {
     m_queuedEarlyTasks.push_back(
         QueuedTask{std::move(message), std::move(channels)});
@@ -197,7 +199,8 @@ void InProcessWorkerMessagingProxy::workerThreadCreated() {
         queuedTask.message.release(),
         WTF::passed(std::move(queuedTask.channels)),
         crossThreadUnretained(workerThread()));
-    workerThread()->postTask(BLINK_FROM_HERE, std::move(task));
+    TaskRunnerHelper::get(TaskType::PostedMessage, workerThread())
+        ->postTask(BLINK_FROM_HERE, std::move(task));
   }
   m_queuedEarlyTasks.clear();
 }