Propagate the user gesture bit when requesting push messaging permission.

content/renderer/push_messaging/push_messaging_client.h

Index: content/renderer/push_messaging/push_messaging_client.h
diff --git a/content/renderer/push_messaging/push_messaging_client.h b/content/renderer/push_messaging/push_messaging_client.h
index e0a99fa17089ff6e1f2370730b18094aecff296f..695479e05f4a668c64524d19d6580d6e789a4570 100644
--- a/content/renderer/push_messaging/push_messaging_client.h
+++ b/content/renderer/push_messaging/push_messaging_client.h
@@ -44,11 +44,13 @@ class PushMessagingClient : public RenderFrameObserver,
   void Subscribe(
       blink::WebServiceWorkerRegistration* service_worker_registration,
       const blink::WebPushSubscriptionOptions& options,
+      bool user_gesture,
       std::unique_ptr<blink::WebPushSubscriptionCallbacks> callbacks) override;
 
   void DidGetManifest(
       blink::WebServiceWorkerRegistration* service_worker_registration,
       const blink::WebPushSubscriptionOptions& options,
+      bool user_gesture,
       std::unique_ptr<blink::WebPushSubscriptionCallbacks> callbacks,
       const GURL& manifest_url,
       const Manifest& manifest,
@@ -57,6 +59,7 @@ class PushMessagingClient : public RenderFrameObserver,
   void DoSubscribe(
       blink::WebServiceWorkerRegistration* service_worker_registration,
       const PushSubscriptionOptions& options,
+      bool user_gesture,
       std::unique_ptr<blink::WebPushSubscriptionCallbacks> callbacks);
 
   void DidSubscribe(