Convert //cc from scoped_ptr to std::unique_ptr.

cc/PRESUBMIT.py

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Top-level presubmit script for cc.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into depot_tools.
 """
 
@@ skipping 144 matching lines @@
 def CheckScopedPtr(input_api, output_api,
                    white_list=CC_SOURCE_FILES, black_list=None):
   black_list = tuple(black_list or input_api.DEFAULT_BLACK_LIST)
   source_file_filter = lambda x: input_api.FilterSourceFile(x,
                                                             white_list,
                                                             black_list)
   errors = []
   for f in input_api.AffectedSourceFiles(source_file_filter):
     for line_number, line in f.ChangedContents():
       # Disallow:
-      # return scoped_ptr<T>(foo);
-      # bar = scoped_ptr<T>(foo);
+      # return std::unique_ptr<T>(foo);
+      # bar = std::unique_ptr<T>(foo);
       # But allow:
-      # return scoped_ptr<T[]>(foo);
-      # bar = scoped_ptr<T[]>(foo);
-      if re.search(r'(=|\breturn)\s*scoped_ptr<.*?(?<!])>\([^)]+\)', line):
+      # return std::unique_ptr<T[]>(foo);
+      # bar = std::unique_ptr<T[]>(foo);
+      if re.search(r'(=|\breturn)\s*std::unique_ptr<.*?(?<!])>\([^)]+\)', line):
         errors.append(output_api.PresubmitError(
           ('%s:%d uses explicit scoped_ptr constructor. ' +
-           'Use make_scoped_ptr() instead.') % (f.LocalPath(), line_number)))
+           'Use base::WrapUnique() instead.') % (f.LocalPath(), line_number)))
       # Disallow:
-      # scoped_ptr<T>()
-      if re.search(r'\bscoped_ptr<.*?>\(\)', line):
+      # std::unique_ptr<T>()
+      if re.search(r'\bstd::unique_ptr<.*?>\(\)', line):
         errors.append(output_api.PresubmitError(
-          '%s:%d uses scoped_ptr<T>(). Use nullptr instead.' %
+          '%s:%d uses std::unique_ptr<T>(). Use nullptr instead.' %
           (f.LocalPath(), line_number)))
   return errors
 
 def FindUnquotedQuote(contents, pos):
   match = re.search(r"(?<!\\)(?P<quote>\")", contents[pos:])
   return -1 if not match else match.start("quote") + pos
 
 def FindUselessIfdefs(input_api, output_api):
   errors = []
   source_file_filter = lambda x: x
@@ skipping 155 matching lines @@
   results = []
   new_description = description
   new_description += '\nCQ_INCLUDE_TRYBOTS=%s' % ';'.join(bots)
   results.append(output_api.PresubmitNotifyResult(
       'Automatically added Blink trybots to run Blink tests on CQ.'))
 
   if new_description != description:
     rietveld_obj.update_description(issue, new_description)
 
   return results