Change protoc build rule to not use cygwin bash.

sync/notifier/non_blocking_invalidation_notifier_unittest.cc

 // Copyright (c) 2012 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 "sync/notifier/non_blocking_invalidation_notifier.h"
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/threading/thread.h"
-#include "google/cacheinvalidation/v2/types.pb.h"
+#include "google/cacheinvalidation/types.pb.h"
 #include "jingle/notifier/base/fake_base_task.h"
 #include "net/url_request/url_request_test_util.h"
 #include "sync/internal_api/public/base/model_type.h"
 #include "sync/internal_api/public/base/model_type_payload_map.h"
 #include "sync/internal_api/public/util/weak_handle.h"
 #include "sync/notifier/invalidation_state_tracker.h"
 #include "sync/notifier/mock_sync_notifier_observer.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 72 matching lines @@
       TRANSIENT_NOTIFICATION_ERROR);
   invalidation_notifier_->OnNotificationsDisabled(
       NOTIFICATION_CREDENTIALS_REJECTED);
 
   ui_loop_.RunAllPending();
 }
 
 }  // namespace
 
 }  // namespace syncer