Use files in path['checkout'] not resource.

scripts/slave/recipe_modules/isolate/api.py

 # 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.
 
 from recipe_engine import recipe_api
 
 
 class IsolateApi(recipe_api.RecipeApi):
   """APIs for interacting with isolates."""
 
@@ skipping 189 matching lines @@
     ]
     if args:
       cmd.append('--')
       cmd.extend(args)
     self.m.python(name, self._run_isolated_path, cmd, **kwargs)
 
   def remove_build_metadata(self):
     """Removes the build metadata embedded in the build artifacts."""
     args = [
         '--build-dir', self.m.chromium.output_dir,
-        '--src-dir', self.m.path['checkout']
     ]
     # Turn the failures during this step into warnings, it's a best effort step
     # that shouldn't break the build for now.
     try:
       self.m.python('remove_build_metadata',
-                    self.resource('remove_build_metadata.py'),
+                    self.m.path.join(self.m.path['checkout'],
+                                     'tools',
+                                     'determinism',
+                                     'remove_build_metadata.py'),
                     args=args,
                     cwd=self.m.path['slave_build'])
     except self.m.step.StepFailure:
       step_result = self.m.step.active_result
       step_result.presentation.status = self.m.step.WARNING
 
   def compare_build_artifacts(self, first_dir, second_dir):
     """Compare the artifacts from 2 builds."""
     args = [
         '--first-build-dir', first_dir,
         '--second-build-dir', second_dir,
         '--target-platform', self.m.chromium.c.TARGET_PLATFORM
     ]
     self.m.python('compare_build_artifacts',
-                  self.resource('compare_build_artifacts.py'),
+                  self.m.path.join(self.m.path['checkout'],
+                                   'tools',
+                                   'determinism',
+                                   'compare_build_artifacts.py'),
                   args=args,
                   cwd=self.m.path['slave_build'])