Pass per-frame task runners to Workers (when possible)

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

Index: third_party/WebKit/Source/core/workers/InProcessWorkerMessagingProxy.h
diff --git a/third_party/WebKit/Source/core/workers/InProcessWorkerMessagingProxy.h b/third_party/WebKit/Source/core/workers/InProcessWorkerMessagingProxy.h
index 42c1eeb3afe180ebaa3a8cc2a455409e7c671576..7682ad95620c24d3ff6c3d0c53ff802433adf425 100644
--- a/third_party/WebKit/Source/core/workers/InProcessWorkerMessagingProxy.h
+++ b/third_party/WebKit/Source/core/workers/InProcessWorkerMessagingProxy.h
@@ -41,12 +41,13 @@
 
 namespace blink {
 
-class InProcessWorkerObjectProxy;
-class WorkerThread;
 class ExecutionContext;
 class InProcessWorkerBase;
+class InProcessWorkerObjectProxy;
+class ParentFrameTaskRunners;
 class WorkerClients;
 class WorkerInspectorProxy;
+class WorkerThread;
 
 // TODO(nhiroki): "MessagingProxy" is not well-defined term among worker
 // components. Probably we should rename this to something more suitable.
@@ -77,6 +78,8 @@ public:
 
     ExecutionContext* getExecutionContext() const { return m_executionContext.get(); }
 
+    ParentFrameTaskRunners* getParentFrameTaskRunners() { return m_parentFrameTaskRunners.get(); }
+
     // Number of live messaging proxies, used by leak detection.
     static int proxyCount();
 
@@ -124,6 +127,8 @@ private:
 
     Persistent<WorkerClients> m_workerClients;
 
+    std::unique_ptr<ParentFrameTaskRunners> m_parentFrameTaskRunners;
+
     RefPtr<WorkerLoaderProxy> m_loaderProxy;
 };