Use current user instead of kjellander@ in the roll script.

NOTRY=True

Bug: chromium:738330
Change-Id: If7a67578d03961a6613a92fb7459f1315286202e
Reviewed-on: https://webrtc-review.googlesource.com/1463
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Commit-Queue: Edward Lemur <ehmaldonado@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19855}
diff --git a/tools_webrtc/autoroller/roll_deps.py b/tools_webrtc/autoroller/roll_deps.py
index 2965658..fa3c90b 100755
--- a/tools_webrtc/autoroller/roll_deps.py
+++ b/tools_webrtc/autoroller/roll_deps.py
@@ -318,7 +318,11 @@
     commit_msg.append('No update to Clang.\n')
 
   # TBR needs to be non-empty for Gerrit to process it.
-  commit_msg.append('TBR=kjellander@webrtc.org, %s' % tbr_authors)
+  git_author = _RunCommand(['git', 'config', 'user.email'],
+                           working_dir=CHECKOUT_SRC_DIR)[0].splitlines()[0]
+  tbr_authors = git_author + ',' + tbr_authors
+
+  commit_msg.append('TBR=%s' % tbr_authors)
   commit_msg.append('BUG=None')
   commit_msg.append('CQ_INCLUDE_TRYBOTS=%s' % EXTRA_TRYBOTS)
   return '\n'.join(commit_msg)