DEPS: Cleanup extra_gyp_flag and extra_gitignore.py

tools/autoroller/unittests/roll_chromium_revision_test.py

 #!/usr/bin/env python
 # Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import os
 import shutil
 import sys
 import tempfile
 import unittest
 
 
 SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
 PARENT_DIR = os.path.join(SCRIPT_DIR, os.pardir)
 sys.path.append(PARENT_DIR)
 from roll_chromium_revision import ParseDepsDict, UpdateDeps, \
     GetMatchingDepsEntries
 
 TEST_DATA_VARS = {
-  'extra_gyp_flag': '-Dextra_gyp_flag=0',
   'chromium_git': 'https://chromium.googlesource.com',
   'chromium_revision': '1b9c098a08e40114e44b6c1ec33ddf95c40b901d',
 }
 
 DEPS_ENTRIES = {
   'src/build': 'https://build.com',
   'src/buildtools': 'https://buildtools.com',
   'src/testing/gtest': 'https://gtest.com',
   'src/testing/gmock': 'https://gmock.com',
 }
@@ skipping 19 matching lines @@
                       'Failed to find %s in\n%s' % (new_rev, deps_contents))
 
   def testParseDepsDict(self):
     with open(self._deps_filename) as deps_file:
       deps_contents = deps_file.read()
     local_scope = ParseDepsDict(deps_contents)
     vars_dict = local_scope['vars']
 
     def assertVar(variable_name):
       self.assertEquals(vars_dict[variable_name], TEST_DATA_VARS[variable_name])
-    assertVar('extra_gyp_flag')
     assertVar('chromium_git')
     assertVar('chromium_revision')
 
   def testGetMatchingDepsEntriesReturnsPathInSimpleCase(self):
     entries = GetMatchingDepsEntries(DEPS_ENTRIES, 'src/testing/gtest')
     self.assertEquals(len(entries), 1)
     self.assertEquals(entries[0], DEPS_ENTRIES['src/testing/gtest'])
 
   def testGetMatchingDepsEntriesHandlesSimilarStartingPaths(self):
     entries = GetMatchingDepsEntries(DEPS_ENTRIES, 'src/testing')
     self.assertEquals(len(entries), 2)
 
   def testGetMatchingDepsEntriesHandlesTwoPathsWithIdenticalFirstParts(self):
     entries = GetMatchingDepsEntries(DEPS_ENTRIES, 'src/build')
     self.assertEquals(len(entries), 1)
     self.assertEquals(entries[0], DEPS_ENTRIES['src/build'])
 
 if __name__ == '__main__':
   unittest.main()