[flag_changer refactor] Fix usages to conform with new API

tools/cygprofile/profile_android_startup.py

Index: tools/cygprofile/profile_android_startup.py
diff --git a/tools/cygprofile/profile_android_startup.py b/tools/cygprofile/profile_android_startup.py
index b4d011f185db9773c7600de6d564908aaaa4cdb0..96d1b4c63b2c5e0120937a7364ce0db5bef87c43 100755
--- a/tools/cygprofile/profile_android_startup.py
+++ b/tools/cygprofile/profile_android_startup.py
@@ -178,7 +178,7 @@ class WprManager(object):
     self._flag_changer = flag_changer.FlagChanger(
         self._device, self._cmdline_file)
     self._flag_changer.AddFlags([
-        '--host-resolver-rules="MAP * 127.0.0.1,EXCLUDE localhost"',
+        '--host-resolver-rules=MAP * 127.0.0.1,EXCLUDE localhost',
         '--testing-fixed-http-port=%s' % device_http,
         '--testing-fixed-https-port=%s' % device_https])
 
@@ -416,4 +416,3 @@ def main():
 
 if __name__ == '__main__':
   sys.exit(main())
-