DCHECK that the security origin for a media request isn't empty

chrome/browser/media/webrtc/media_permission.cc

 // Copyright 2015 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/media/webrtc/media_permission.h"
 
 #include "chrome/browser/media/webrtc/media_capture_devices_dispatcher.h"
 #include "chrome/browser/media/webrtc/media_stream_device_permissions.h"
 #include "chrome/browser/permissions/permission_context_base.h"
 #include "chrome/browser/permissions/permission_manager.h"
@@ skipping 23 matching lines @@
       embedding_origin_(embedding_origin),
       profile_(profile),
       web_contents_(web_contents) {
   // Currently |web_contents_| is only used on ChromeOS but it's not worth
   // #ifdef'ing out all its usage, so just mark it used here.
   (void)web_contents_;
 }
 
 ContentSetting MediaPermission::GetPermissionStatus(
     content::MediaStreamRequestResult* denial_reason) const {
-  // Deny the request if the security origin is empty, this happens with
-  // file access without |--allow-file-access-from-files| flag.
-  if (requesting_origin_.is_empty()) {
-    *denial_reason = content::MEDIA_DEVICE_INVALID_SECURITY_ORIGIN;
-    return CONTENT_SETTING_BLOCK;
-  }
+  DCHECK(!requesting_origin_.is_empty());
 
   PermissionManager* permission_manager = PermissionManager::Get(profile_);
 
   // Find out if the kill switch is on. Set the denial reason to kill switch.
   if (permission_manager->IsPermissionKillSwitchOn(content_type_)) {
     *denial_reason = content::MEDIA_DEVICE_KILL_SWITCH_ON;
     return CONTENT_SETTING_BLOCK;
   }
 
 #if defined(OS_CHROMEOS)
@@ skipping 55 matching lines @@
   // Check policy and content settings.
   ContentSetting content_setting =
       permission_manager
           ->GetPermissionStatus(content_type_, requesting_origin_,
                                 embedding_origin_)
           .content_setting;
   if (content_setting == CONTENT_SETTING_BLOCK)
     *denial_reason = content::MEDIA_DEVICE_PERMISSION_DENIED;
   return content_setting;
 }