Make unknown extension subpermissions warnings instead of errors.

extensions/common/permissions/media_galleries_permission.cc

 // Copyright 2014 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 "extensions/common/permissions/media_galleries_permission.h"
 
 #include <set>
 #include <string>
 
 #include "base/logging.h"
@@ skipping 38 matching lines @@
 
 MediaGalleriesPermission::MediaGalleriesPermission(
     const APIPermissionInfo* info)
   : SetDisjunctionPermission<MediaGalleriesPermissionData,
                              MediaGalleriesPermission>(info) {
 }
 
 MediaGalleriesPermission::~MediaGalleriesPermission() {
 }
 
-bool MediaGalleriesPermission::FromValue(const base::Value* value,
-                                         std::string* error) {
+bool MediaGalleriesPermission::FromValue(
+    const base::Value* value,
+    std::string* error,
+    std::vector<std::string>* unhandled_permissions) {
+  std::vector<std::string> unhandled_sub_permissions;
   if (!SetDisjunctionPermission<MediaGalleriesPermissionData,
-                                MediaGalleriesPermission>::FromValue(value,
-                                                                     error)) {
+                                MediaGalleriesPermission>::FromValue(
+                                    value, error, &unhandled_sub_permissions)) {
+    unhandled_permissions->insert(unhandled_permissions->end(),
+                                  unhandled_sub_permissions.begin(),
+                                  unhandled_sub_permissions.end());
     return false;
   }
 
+  for (size_t i = 0; i < unhandled_sub_permissions.size(); i++) {
+    unhandled_permissions->push_back(
+        "{\"mediaGalleries\": [" + unhandled_sub_permissions[i] + "]}");
+  }
+
   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 ||
         it->permission() == kScanPermission) {
       continue;
     }
     if (it->permission() == kReadPermission) {
@@ skipping 71 matching lines @@
   }
   if (has_delete) {
     result.push_back(PermissionMessage(
         PermissionMessage::kMediaGalleriesAllGalleriesDelete,
         base::string16()));
   }
   return result;
 }
 
 }  // namespace extensions