Make Foreign Fetch an origin trial.

third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.cpp

Index: third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.cpp
diff --git a/third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.cpp b/third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.cpp
index c664b86f812d080e1168cc66fbed4dd6aaa652ed..29f142fc910f49ce19b295a1ee9c7397ca4ee733 100644
--- a/third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.cpp
+++ b/third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.cpp
@@ -37,6 +37,7 @@
 #include "core/dom/ExecutionContext.h"
 #include "core/dom/MessagePort.h"
 #include "core/inspector/ConsoleMessage.h"
+#include "core/origin_trials/OriginTrials.h"
 #include "core/workers/WorkerGlobalScope.h"
 #include "core/workers/WorkerThread.h"
 #include "modules/background_sync/SyncEvent.h"
@@ -175,7 +176,7 @@ void ServiceWorkerGlobalScopeProxy::dispatchInstallEvent(int eventID)
 {
     WaitUntilObserver* observer = WaitUntilObserver::create(workerGlobalScope(), WaitUntilObserver::Install, eventID);
     Event* event;
-    if (RuntimeEnabledFeatures::foreignFetchEnabled())
+    if (OriginTrials::foreignFetchEnabled(workerGlobalScope()))
         event = InstallEvent::create(EventTypeNames::install, ExtendableEventInit(), observer);
     else
         event = ExtendableEvent::create(EventTypeNames::install, ExtendableEventInit(), observer);