Move the last extensions/common unit tests to extensions_unittests

extensions/test/test_permissions_provider.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/test/test_permissions_provider.h"
-
-namespace extensions {
-
-TestPermissionsProvider::TestPermissionsProvider() {}
-
-TestPermissionsProvider::~TestPermissionsProvider() {}
-
-std::vector<APIPermissionInfo*> TestPermissionsProvider::GetAllPermissions()
-    const {
-  // TODO(tfarina): This needs to have a "real" implementation, otherwise
-  // some tests under extensions_unittests will fail. http://crbug.com/348066
-  std::vector<APIPermissionInfo*> permissions;
-  return permissions;
-}
-
-std::vector<PermissionsProvider::AliasInfo>
-TestPermissionsProvider::GetAllAliases() const {
-  std::vector<PermissionsProvider::AliasInfo> aliases;
-  return aliases;
-}
-
-}  // namespace extensions