Make checkdeps.py check third_party.

third_party/liblouis/nacl_wrapper/liblouis_wrapper.cc

 // Copyright 2013 Google Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License"); you may not
 // use this file except in compliance with the License. You may obtain a copy of
 // the License at
 //
 // http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 // License for the specific language governing permissions and limitations under
 // the License.
 
-#include "liblouis_wrapper.h"
+#include "third_party/liblouis/nacl_wrapper/liblouis_wrapper.h"
 
 #include <cstddef>
 
-#include "liblouis/liblouis.h"
+#include "third_party/liblouis/overrides/liblouis/liblouis.h"
 
 namespace {
 
 // Decodes UTF-8 into 16-bit wide characters.
 // This implementation is very permissive and may miss encoding errors.
 // It ignores charaters which are not in the Unicode Basic Multilingual Plane.
 // TODO(jbroman): Handle more than BMP if liblouis changes to accept UTF-16.
 static bool DecodeUtf8(const std::string& in, std::vector<widechar>* out) {
   int len = in.length();
   std::vector<widechar> result;
@@ skipping 209 matching lines @@
     // TODO(jbroman): log this
     return false;
   }
 
   // Return the back translation result.
   out->swap(text);
   return true;
 }
 
 }  // namespace liblouis_nacl