Stop generating DEPTH in trace_inputs.py.

tools/isolate/trace_inputs_smoke_test.py

 #!/usr/bin/env python
 # 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.
 
 import cStringIO
 import logging
 import os
 import shutil
 import subprocess
@@ skipping 85 matching lines @@
     # virtualenv usage.
     self.assertEquals(expected_end, actual[-len(expected_end):])
 
   def test_trace_gyp(self):
     import trace_inputs
     expected_value = {
       'conditions': [
         ['OS=="%s"' % trace_inputs.get_flavor(), {
           'variables': {
             'isolate_dependency_tracked': [
-              '<(DEPTH)/trace_inputs.py',
-              '<(DEPTH)/%s' % FILENAME,
+              # It is run from data/trace_inputs.
+              '../trace_inputs.py',
+              '../%s' % FILENAME,
             ],
             'isolate_dependency_untracked': [
               'trace_inputs/',
             ],
           },
         }],
       ],
     }
     expected_buffer = cStringIO.StringIO()
     trace_inputs.pretty_print(expected_value, expected_buffer)
 
     actual = self._execute(True)
     self.assertEquals(expected_buffer.getvalue(), actual)
 
 
 if __name__ == '__main__':
   VERBOSE = '-v' in sys.argv
   logging.basicConfig(level=logging.DEBUG if VERBOSE else logging.ERROR)
   unittest.main()