Worker: Provide a way to access parent frame task runners from a worker thread

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

Index: third_party/WebKit/Source/core/workers/WorkerReportingProxy.h
diff --git a/third_party/WebKit/Source/core/workers/WorkerReportingProxy.h b/third_party/WebKit/Source/core/workers/WorkerReportingProxy.h
index 523dbac39d373cc96625a4178f92579711f106bf..42cd9876f68192f46f47cf3063ec7be7eb5a8744 100644
--- a/third_party/WebKit/Source/core/workers/WorkerReportingProxy.h
+++ b/third_party/WebKit/Source/core/workers/WorkerReportingProxy.h
@@ -40,6 +40,7 @@
 namespace blink {
 
 class ConsoleMessage;
+class ParentFrameTaskRunners;
 class SourceLocation;
 class WorkerOrWorkletGlobalScope;
 
@@ -57,6 +58,9 @@ class CORE_EXPORT WorkerReportingProxy {
                                     SourceLocation*) = 0;
   virtual void postMessageToPageInspector(const String&) = 0;
 
+  // Returns the parent frame's task runners.
+  virtual ParentFrameTaskRunners* getParentFrameTaskRunners() = 0;
+
   // Invoked when the new WorkerGlobalScope is created. This is called after
   // didLoadWorkerScript().
   virtual void didCreateWorkerGlobalScope(WorkerOrWorkletGlobalScope*) {}