Issue #2101 - Part 3: Update libyuv

Updated to version 1861, git revision 88b050f337cc0ca2a51800fe7bf4737222c87344 from
https://chromium.googlesource.com/libyuv/libyuv/

media/libyuv/PRESUBMIT.py

@@ -1,4 +1,4 @@
-# Copyright 2014 The LibYuv Project Authors. All rights reserved.
+# Copyright 2017 The LibYuv 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
@@ -6,60 +6,47 @@
 # in the file PATENTS. All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
-import re
-import sys
+# Runs PRESUBMIT.py in py3 mode by git cl presubmit.
+USE_PYTHON3 = True
 
 
-def GetDefaultTryConfigs(bots=None):
-  """Returns a list of ('bot', set(['tests']), optionally filtered by [bots].
+def _CommonChecks(input_api, output_api):
+  """Checks common to both upload and commit."""
+  results = []
+  results.extend(input_api.canned_checks.RunPylint(input_api, output_api,
+      files_to_skip=(r'^base[\\\/].*\.py$',
+                     r'^build[\\\/].*\.py$',
+                     r'^buildtools[\\\/].*\.py$',
+                     r'^ios[\\\/].*\.py$',
+                     r'^out.*[\\\/].*\.py$',
+                     r'^testing[\\\/].*\.py$',
+                     r'^third_party[\\\/].*\.py$',
+                     r'^tools[\\\/].*\.py$',
+                     # TODO(kjellander): should arguably be checked.
+                     r'^tools_libyuv[\\\/]valgrind[\\\/].*\.py$',
+                     r'^xcodebuild.*[\\\/].*\.py$',),
+      disabled_warnings=['F0401',  # Failed to import x
+                         'E0611',  # No package y in x
+                         'W0232',  # Class has no __init__ method
+                        ],
+      pylintrc='pylintrc',
+      version='2.7'))
+  return results
 
-  For WebRTC purposes, we always return an empty list of tests, since we want
-  to run all tests by default on all our trybots.
-  """
-  return { 'tryserver.libyuv': dict((bot, []) for bot in bots)}
+def CheckChangeOnUpload(input_api, output_api):
+  results = []
+  results.extend(_CommonChecks(input_api, output_api))
+  results.extend(
+      input_api.canned_checks.CheckGNFormatted(input_api, output_api))
+  return results
 
 
-# pylint: disable=W0613
-def GetPreferredTryMasters(project, change):
-  files = change.LocalPaths()
-  bots = [
-    'win',
-    'win_rel',
-    'win_x64_rel',
-    'win_x64_gn',
-    'win_x64_gn_rel',
-    'win_clang',
-    'win_clang_rel',
-    'win_x64_clang_rel',
-    'mac',
-    'mac_rel',
-    'mac_gn',
-    'mac_gn_rel',
-    'mac_asan',
-    'ios',
-    'ios_rel',
-    'ios_arm64',
-    'ios_arm64_rel',
-    'linux',
-    'linux_rel',
-    'linux_gn',
-    'linux_gn_rel',
-    'linux_memcheck',
-    'linux_tsan2',
-    'linux_asan',
-    'linux_msan',
-    'linux_ubsan',
-    'linux_ubsan_vptr',
-    'android',
-    'android_rel',
-    'android_clang',
-    'android_arm64',
-    'android_mips',
-    'android_x64',
-    'android_x86',
-    'android_gn',
-    'android_gn_rel',
-  ]
-  if not files or all(re.search(r'[\\/]OWNERS$', f) for f in files):
-    return {}
-  return GetDefaultTryConfigs(bots)
+def CheckChangeOnCommit(input_api, output_api):
+  results = []
+  results.extend(_CommonChecks(input_api, output_api))
+  results.extend(input_api.canned_checks.CheckOwners(input_api, output_api))
+  results.extend(input_api.canned_checks.CheckChangeWasUploaded(
+      input_api, output_api))
+  results.extend(input_api.canned_checks.CheckChangeHasDescription(
+      input_api, output_api))
+  return results