Media Galleries API Scanning: Add Scan Permission and basic test.

chrome/common/extensions/permissions/media_galleries_permission_data.cc

 // Copyright (c) 2013 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/common/extensions/permissions/media_galleries_permission_data.h"
 
 #include "base/strings/string_util.h"
 #include "base/values.h"
 #include "chrome/common/extensions/permissions/media_galleries_permission.h"
 
@@ skipping 21 matching lines @@
     return false;
 
   std::string raw_permission;
   if (!value->GetAsString(&raw_permission))
     return false;
 
   std::string permission;
   TrimWhitespaceASCII(raw_permission, TRIM_ALL, &permission);
 
   if (permission == MediaGalleriesPermission::kAllAutoDetectedPermission ||
+      permission == MediaGalleriesPermission::kScanPermission ||
       permission == MediaGalleriesPermission::kReadPermission ||
       permission == MediaGalleriesPermission::kCopyToPermission ||
       permission == MediaGalleriesPermission::kDeletePermission) {
     permission_ = permission;
     return true;
   }
   return false;
 }
 
 bool MediaGalleriesPermissionData::operator<(
     const MediaGalleriesPermissionData& rhs) const {
   return permission_ < rhs.permission_;
 }
 
 bool MediaGalleriesPermissionData::operator==(
     const MediaGalleriesPermissionData& rhs) const {
   return permission_ == rhs.permission_;
 }
 
 }  // namespace extensions