Rebased localmods in libcxx to 223109.

PRESUBMIT.py

+# Copyright (c) 2013 The Native Client Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Documentation on PRESUBMIT.py can be found at:
+# http://www.chromium.org/developers/how-tos/depottools/presubmit-scripts
+
+EXCLUDE_PROJECT_CHECKS_DIRS = [ '.' ]
+
+import subprocess
+def CheckGitBranch():
+  p = subprocess.Popen("git branch -vv", shell=True,
+                       stdout=subprocess.PIPE)
+  output, _ = p.communicate()
+
+  lines = output.split('\n')
+  for line in lines:
+    # output format for checked-out branch should be
+    # * branchname hash [TrackedBranchName ...
+    toks = line.split()
+    if '*' not in toks[0]:
+      continue
+    if not 'origin/master' in toks[3]:
+      warning = 'Warning: your current branch:\n' + line
+      warning += '\nis not tracking origin/master. git cl push may silently '
+      warning += 'fail to push your change. To fix this, do\n'
+      warning += 'git branch -u origin/master'
+      return warning
+    return None
+  print 'Warning: presubmit check could not determine local git branch'
+  return None
+
+def _CommonChecks(input_api, output_api):
+  """Checks for both upload and commit."""
+  results = []
+  results.extend(input_api.canned_checks.PanProjectChecks(
+      input_api, output_api, project_name='Native Client',
+      excluded_paths=tuple(EXCLUDE_PROJECT_CHECKS_DIRS)))
+  branch_warning = CheckGitBranch()
+  if branch_warning:
+    results.append(output_api.PresubmitPromptWarning(branch_warning))
+  return results
+
+def CheckChangeOnUpload(input_api, output_api):
+  """Verifies all changes in all files.
+  Args:
+    input_api: the limited set of input modules allowed in presubmit.
+    output_api: the limited set of output modules allowed in presubmit.
+  """
+  report = []
+  report.extend(_CommonChecks(input_api, output_api))
+  return report
+
+def CheckChangeOnCommit(input_api, output_api):
+  """Verifies all changes in all files and verifies that the
+  tree is open and can accept a commit.
+  Args:
+    input_api: the limited set of input modules allowed in presubmit.
+    output_api: the limited set of output modules allowed in presubmit.
+  """
+  report = []
+  report.extend(CheckChangeOnUpload(input_api, output_api))
+  return report
+
+def GetPreferredTrySlaves(project, change):
+  return []