kjellander ed754e71ae Enable GN check for webrtc/base
It's not possible to enable it for the rtc_base_approved
target but since a larger refactoring is ongoing for webrtc/base
this CL doesn't attempt to fix that.

Changes made:
* Move webrtc/system_wrappers/include/stringize_macros.h into
  webrtc/base:rtc_base_approved_unittests (and corresponding
  unit test to rtc_base_approved_unittests).
* Move md5digest.* from rtc_base_approved to rtc_base_test_utils target.
* Move webrtc/system_wrappers/include/stringize_macros.h (+test) into
  webrtc/base.
* Remove unused use include of webrtc/base/fileutils.h in
  webrtc/base/pathutils.cc

BUG=webrtc:6828, webrtc:3806, webrtc:7480
NOTRY=True

Review-Url: https://codereview.webrtc.org/2717083002
Cr-Commit-Position: refs/heads/master@{#17766}
2017-04-19 15:37:36 +00:00
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