Move /webrtc/api/android files to /webrtc/sdk/android

webrtc/sdk/android/PRESUBMIT.py

 # Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 def CheckChangeOnUpload(input_api, output_api):
   results = []
   results.extend(CheckPatchFormatted(input_api, output_api))
   return results
 
 def CheckPatchFormatted(input_api, output_api):
   import git_cl
   cmd = ['cl', 'format', '--dry-run', input_api.PresubmitLocalPath()]
   code, _ = git_cl.RunGitWithCode(cmd, suppress_stderr=True)
   if code == 2:
     short_path = input_api.basename(input_api.PresubmitLocalPath())
     full_path = input_api.os_path.relpath(input_api.PresubmitLocalPath(),
                                           input_api.change.RepositoryRoot())
     return [output_api.PresubmitPromptWarning(
       'The %s directory requires source formatting. '
       'Please run git cl format %s' %
       (short_path, full_path))]
   # As this is just a warning, ignore all other errors if the user
   # happens to have a broken clang-format, doesn't use git, etc etc.
   return []