Revert "Verify that FetchEvent::m_request holds same-thread reference."

third_party/WebKit/Source/modules/serviceworkers/FetchEvent.h

Index: third_party/WebKit/Source/modules/serviceworkers/FetchEvent.h
diff --git a/third_party/WebKit/Source/modules/serviceworkers/FetchEvent.h b/third_party/WebKit/Source/modules/serviceworkers/FetchEvent.h
index bddd967fd036cd793c3e3d8a72018c978975957d..aa5a0eba0cd2ea48518a354137d64d1c9395276d 100644
--- a/third_party/WebKit/Source/modules/serviceworkers/FetchEvent.h
+++ b/third_party/WebKit/Source/modules/serviceworkers/FetchEvent.h
@@ -74,8 +74,7 @@ class MODULES_EXPORT FetchEvent final : public ExtendableEvent {
 
  private:
   Member<RespondWithObserver> m_observer;
-  // TODO(sof): remove once crbug.com/655926 has been diagnosed.
-  SameThreadCheckedMember<Request> m_request;
+  Member<Request> m_request;
   Member<PreloadResponseProperty> m_preloadResponseProperty;
   String m_clientId;
   bool m_isReload;