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

chrome/common/extensions/permissions/media_galleries_permission.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.h"
 
 #include <set>
 #include <string>
 
 #include "base/logging.h"
@@ skipping 13 matching lines @@
     return has_read;
   return true;
 }
 
 }  // namespace
 
 namespace extensions {
 
 const char MediaGalleriesPermission::kAllAutoDetectedPermission[] =
     "allAutoDetected";
+const char MediaGalleriesPermission::kScanPermission[] = "scan";
 const char MediaGalleriesPermission::kReadPermission[] = "read";
 const char MediaGalleriesPermission::kCopyToPermission[] = "copyTo";
 const char MediaGalleriesPermission::kDeletePermission[] = "delete";
 
 MediaGalleriesPermission::MediaGalleriesPermission(
     const APIPermissionInfo* info)
   : SetDisjunctionPermission<MediaGalleriesPermissionData,
                              MediaGalleriesPermission>(info) {
 }
 
 MediaGalleriesPermission::~MediaGalleriesPermission() {
 }
 
 bool MediaGalleriesPermission::FromValue(const base::Value* value) {
   if (!SetDisjunctionPermission<MediaGalleriesPermissionData,
                                 MediaGalleriesPermission>::FromValue(value)) {
     return false;
   }
 
   bool has_read = false;
   bool has_copy_to = false;
   bool has_delete = false;
   for (std::set<MediaGalleriesPermissionData>::const_iterator it =
       data_set_.begin(); it != data_set_.end(); ++it) {
-    if (it->permission() == kAllAutoDetectedPermission) {
+    if (it->permission() == kAllAutoDetectedPermission ||
+        it->permission() == kScanPermission) {
       continue;
     }
     if (it->permission() == kReadPermission) {
       has_read = true;
       continue;
     }
     if (it->permission() == kCopyToPermission) {
       has_copy_to = true;
       continue;
     }
@@ skipping 64 matching lines @@
   }
   if (has_delete) {
     result.push_back(PermissionMessage(
         PermissionMessage::kMediaGalleriesAllGalleriesDelete,
         base::string16()));
   }
   return result;
 }
 
 }  // namespace extensions