Reintroduce plumbing for user gesture into permission system.

chrome/browser/media/media_stream_device_permission_context.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/media_stream_device_permission_context.h"
 #include "chrome/browser/media/media_stream_device_permissions.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/pref_names.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "components/content_settings/core/common/content_settings.h"
 #include "content/public/common/url_constants.h"
 #include "extensions/common/constants.h"
 
 MediaStreamDevicePermissionContext::MediaStreamDevicePermissionContext(
     Profile* profile,
     const content::PermissionType permission_type,
     const ContentSettingsType content_settings_type)
     : PermissionContextBase(profile, permission_type, content_settings_type),
       content_settings_type_(content_settings_type) {
   DCHECK(content_settings_type_ == CONTENT_SETTINGS_TYPE_MEDIASTREAM_MIC ||
          content_settings_type_ == CONTENT_SETTINGS_TYPE_MEDIASTREAM_CAMERA);
 }
 
 MediaStreamDevicePermissionContext::~MediaStreamDevicePermissionContext() {}
 
 void MediaStreamDevicePermissionContext::RequestPermission(
     content::WebContents* web_contents,
     const PermissionRequestID& id,
     const GURL& requesting_frame,
+    bool user_gesture,
     const BrowserPermissionCallback& callback) {
   NOTREACHED() << "RequestPermission is not implemented";
   callback.Run(CONTENT_SETTING_BLOCK);
 }
 
 ContentSetting MediaStreamDevicePermissionContext::GetPermissionStatus(
     const GURL& requesting_origin,
     const GURL& embedding_origin) const {
   // TODO(raymes): Merge this policy check into content settings
   // crbug.com/244389.
@@ skipping 42 matching lines @@
     const PermissionRequestID& id) {
   NOTREACHED() << "CancelPermissionRequest is not implemented";
 }
 
 bool MediaStreamDevicePermissionContext::IsRestrictedToSecureOrigins() const {
   // Flash currently doesn't require secure origin to use mic/camera. If we
   // return true here, it'll break the use case like http://tinychat.com.
   // TODO(raymes): Change this to true after crbug.com/526324 is fixed.
   return false;
 }