Push registration should read a "gcm_user_visible_only" key from the Manifest.

chrome/browser/services/gcm/push_messaging_service_impl.cc

 // Copyright 2014 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.
 
 #include "chrome/browser/services/gcm/push_messaging_service_impl.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 211 matching lines @@
 GURL PushMessagingServiceImpl::PushEndpoint() {
   return GURL(std::string(kPushMessagingEndpoint));
 }
 
 void PushMessagingServiceImpl::RegisterFromDocument(
     const GURL& requesting_origin,
     int64 service_worker_registration_id,
     const std::string& sender_id,
     int renderer_id,
     int render_frame_id,
-    bool user_gesture,
+    bool user_visible_only,
     const content::PushMessagingService::RegisterCallback& callback) {
   if (!gcm_profile_service_->driver()) {
     NOTREACHED() << "There is no GCMDriver. Has GCMProfileService shut down?";
     return;
   }
 
   PushMessagingApplicationId application_id = PushMessagingApplicationId(
       requesting_origin, service_worker_registration_id);
   DCHECK(application_id.IsValid());
 
@@ skipping 32 matching lines @@
   gcm::PushMessagingPermissionContext* permission_context =
       gcm::PushMessagingPermissionContextFactory::GetForProfile(profile_);
 
   if (permission_context == NULL) {
     RegisterEnd(callback,
                 std::string(),
                 content::PUSH_REGISTRATION_STATUS_PERMISSION_DENIED);
     return;
   }
 
+  // TODO(miguelg): Consider the value of |user_visible_only| when making
+  // the permission request.
+  // TODO(mlamouri): Move requesting Push permission over to using Mojo, and
+  // re-introduce the ability of |user_gesture| when bubbles require this.
+  // https://crbug.com/423770.
   permission_context->RequestPermission(
-      web_contents, id, embedding_origin, user_gesture,
+      web_contents, id, embedding_origin, true /* user_gesture */,
       base::Bind(&PushMessagingServiceImpl::DidRequestPermission,
                  weak_factory_.GetWeakPtr(), application_id, sender_id,
                  callback));
 }
 
 void PushMessagingServiceImpl::RegisterFromWorker(
     const GURL& requesting_origin,
     int64 service_worker_registration_id,
     const std::string& sender_id,
     const content::PushMessagingService::RegisterCallback& register_callback) {
@@ skipping 140 matching lines @@
 }
 
 void PushMessagingServiceImpl::AddAppHandlerIfNecessary() {
   if (gcm_profile_service_->driver()->GetAppHandler(
           kPushMessagingApplicationIdPrefix) != this)
     gcm_profile_service_->driver()->AddAppHandler(
         kPushMessagingApplicationIdPrefix, this);
 }
 
 }  // namespace gcm