Add ToString() methods to classes with << operators, preparing for deprecations.

Bug: webrtc:8982
Change-Id: I9b8792a229539dd9848f4d9936fe343f4bf9ad49
Reviewed-on: https://webrtc-review.googlesource.com/63200
Commit-Queue: Jonas Olsson <jonasolsson@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22705}
diff --git a/PRESUBMIT.py b/PRESUBMIT.py
index e533507..048689e 100755
--- a/PRESUBMIT.py
+++ b/PRESUBMIT.py
@@ -432,7 +432,7 @@
   include_re = input_api.re.compile(r'#include <(i|o|s)stream>')
   usage_re = input_api.re.compile(r'std::(w|i|o|io|wi|wo|wio)(string)*stream')
   no_presubmit_re = input_api.re.compile(
-      r'  // no-presubmit-check TODO\(webrtc:8982\)')
+      r'// no-presubmit-check TODO\(webrtc:8982\)')
   for f in input_api.AffectedSourceFiles(input_api.FilterSourceFile):
     if f.LocalPath() == 'PRESUBMIT.py':
       continue