Use ICU for string pluralization in the extension permission dialog.

chrome/common/extensions/permissions/permissions_data_unittest.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 <vector>
 
 #include "base/command_line.h"
 #include "base/memory/ref_counted.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 157 matching lines @@
 
 TEST(ExtensionPermissionsTest, GetPermissionMessages_ManyHostsPermissions) {
   scoped_refptr<Extension> extension;
   extension = LoadManifest("permissions", "more-than-3-hosts.json");
   std::vector<string16> warnings =
       PermissionsData::GetPermissionMessageStrings(extension.get());
   std::vector<string16> warnings_details =
       PermissionsData::GetPermissionMessageDetailsStrings(extension.get());
   ASSERT_EQ(1u, warnings.size());
   ASSERT_EQ(1u, warnings_details.size());
-  EXPECT_EQ("Access your data on 5 website(s)", UTF16ToUTF8(warnings[0]));
+  EXPECT_EQ("Access your data on 5 websites", UTF16ToUTF8(warnings[0]));
   EXPECT_EQ("- www.a.com\n- www.b.com\n- www.c.com\n- www.d.com\n- www.e.com",
             UTF16ToUTF8(warnings_details[0]));
 }
 
 TEST(ExtensionPermissionsTest, GetPermissionMessages_LocationApiPermission) {
   scoped_refptr<Extension> extension;
   extension = LoadManifest("permissions",
                            "location-api.json",
                            Manifest::COMPONENT,
                            Extension::NO_FLAGS);
@@ skipping 419 matching lines @@
   PermissionsData::ClearTabSpecificPermissions(extension.get(), 1);
   EXPECT_FALSE(PermissionsData::GetTabSpecificPermissions(extension.get(), 1)
                    .get());
 
   EXPECT_TRUE(AllowedExclusivelyOnTab(extension.get(), no_urls, 0));
   EXPECT_TRUE(AllowedExclusivelyOnTab(extension.get(), no_urls, 1));
   EXPECT_TRUE(AllowedExclusivelyOnTab(extension.get(), no_urls, 2));
 }
 
 }  // namespace extensions