Remove old webrtc/base directory

PRESUBMIT.py

Index: PRESUBMIT.py
diff --git a/PRESUBMIT.py b/PRESUBMIT.py
index d29c4c41a04a14266ccb564b86eca9884c0d80d7..2a22d73f5d387478a5cc87e2373d9b2a88d7c3dd 100755
--- a/PRESUBMIT.py
+++ b/PRESUBMIT.py
@@ -509,26 +509,6 @@ def _CheckUsageOfGoogleProtobufNamespace(input_api, output_api):
   return []
 
 
-def _CheckNoChangesToWebRTCBase(input_api, output_api):
-  """Checks that no changes refer to webrtc/base."""
-  problems = []
-
-  for f in input_api.AffectedFiles():
-    if os.path.join('webrtc', 'base') in f.LocalPath():
-      problems.append('    ' + f.LocalPath())
-      continue
-    for line_num, line in f.ChangedContents():
-      if 'webrtc/base' in line:
-        problems.append('    %s: %s' % (f.LocalPath(), line_num))
-
-  if problems:
-    return [output_api.PresubmitPromptWarning(
-        'webrtc/base is being moved to webrtc/rtc_base (See '
-        'bugs.webrtc.org/7634). Please refer to webrtc/rtc_base instead in the '
-        'following files:\n' + '\n'.join(problems))]
-  return []
-
-
 def _CommonChecks(input_api, output_api):
   """Checks common to both upload and commit."""
   results = []
@@ -597,7 +577,6 @@ def _CommonChecks(input_api, output_api):
   results.extend(_CheckUsageOfGoogleProtobufNamespace(input_api, output_api))
   results.extend(_CheckOrphanHeaders(input_api, output_api))
   results.extend(_CheckNewLineAtTheEndOfProtoFiles(input_api, output_api))
-  results.extend(_CheckNoChangesToWebRTCBase(input_api, output_api))
   return results