V8 bindings gen: Error if OriginTrialEnabled and SecureContext together.

third_party/WebKit/Source/modules/serviceworkers/NavigationPreloadManager.idl

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // TODO(falken): Revise link when this lands in the spec:
 // https://github.com/w3c/ServiceWorker/issues/920
 [
     OriginTrialEnabled=ServiceWorkerNavigationPreload,
-    SecureContext,
     Exposed=(Window,Worker),
 ] interface NavigationPreloadManager {
-    [CallWith=ScriptState] Promise<void> enable();
-    [CallWith=ScriptState] Promise<void> disable();
-    [CallWith=ScriptState] Promise<void> setHeaderValue(ByteString value);
-    [CallWith=ScriptState] Promise<NavigationPreloadState> getState();
+    // TODO(mgiuca): Put SecureContext on the interface, not individual methods.
+    // Currently prevented due to clash with OriginTrialEnabled. This can be
+    // resolved either when OriginTrialEnabled is removed, or
+    // https://crbug.com/695123 is fixed.
+    [SecureContext, CallWith=ScriptState] Promise<void> enable();
+    [SecureContext, CallWith=ScriptState] Promise<void> disable();
+    [SecureContext, CallWith=ScriptState] Promise<void> setHeaderValue(ByteString value);
+    [SecureContext, CallWith=ScriptState] Promise<NavigationPreloadState> getState();
 };