Reintroduce plumbing for user gesture into permission system.

chrome/browser/background_sync/background_sync_permission_context_unittest.cc

 // 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.
 
 #include "chrome/browser/background_sync/background_sync_permission_context.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/macros.h"
@@ skipping 22 matching lines @@
       const GURL& url,
       BackgroundSyncPermissionContext* permission_context) {
     content::WebContentsTester::For(web_contents())->NavigateAndCommit(url);
 
     base::RunLoop run_loop;
 
     const PermissionRequestID id(
         web_contents()->GetRenderProcessHost()->GetID(),
         web_contents()->GetMainFrame()->GetRoutingID(), -1 /* request_id */);
     permission_context->RequestPermission(
-        web_contents(), id, url,
+        web_contents(), id, url, false /* user_gesture */,
         base::Bind(
             &BackgroundSyncPermissionContextTest::TrackPermissionDecision,
             base::Unretained(this), run_loop.QuitClosure()));
 
     run_loop.Run();
   }
 
   void TrackPermissionDecision(base::Closure done_closure,
                                ContentSetting content_setting) {
     permission_granted_ = content_setting == CONTENT_SETTING_ALLOW;
@@ skipping 39 matching lines @@
                                       std::string(), CONTENT_SETTING_BLOCK);
 
   NavigateAndRequestPermission(url1, &permission_context);
 
   EXPECT_FALSE(permission_granted());
 
   NavigateAndRequestPermission(url2, &permission_context);
 
   EXPECT_TRUE(permission_granted());
 }