gn: get rid of GetRealPath() function

It does the same thing of MakeAbsoluteFilePath() function,
so use base's version.

BUG=None
TEST=gn gen + gn_unittests
R=brettw@chromium.org

Change-Id: Ia6313f26ee1419846ff6c77fc1ad1d9d4102dae1
Reviewed-on: https://chromium-review.googlesource.com/503927
Reviewed-by: Brett Wilson <brettw@chromium.org>
Commit-Queue: Thiago Farina <tfarina@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#471423}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: cbbd560a5c57f738f798d9ac4462c69058358194
1 file changed
tree: d609e6d4b5baa8bd4c2e4f4f42240c8c1ac6d0fd
  1. tools/