mac: Remove vestiges of 32-bit deprecation

build/mac/tweak_info_plist.py

 #!/usr/bin/env python
 
 # 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.
 
 #
 # Xcode supports build variable substitutions and CPP; sadly, that doesn't work
 # because:
 #
@@ skipping 141 matching lines @@
       'BreakpadProduct',
       'BreakpadProductDisplay',
       'BreakpadVersion',
       'BreakpadSendAndExit',
       'BreakpadSkipConfirm')
 
 
 def _TagSuffixes():
   # Keep this list sorted in the order that tag suffix components are to
   # appear in a tag value. That is to say, it should be sorted per ASCII.
-  components = ('32bit', 'full')
+  components = ('full',)
   assert tuple(sorted(components)) == components
 
   components_len = len(components)
   combinations = 1 << components_len
   tag_suffixes = []
   for combination in xrange(0, combinations):
     tag_suffix = ''
     for component_index in xrange(0, components_len):
       if combination & (1 << component_index):
         tag_suffix += '-' + components[component_index]
@@ skipping 98 matching lines @@
   # Info.plist will work perfectly well in any plist format, but traditionally
   # applications use xml1 for this, so convert it to ensure that it's valid.
   proc = subprocess.Popen(['plutil', '-convert', 'xml1', '-o', DEST_INFO_PLIST,
                            temp_info_plist.name])
   proc.wait()
   return proc.returncode
 
 
 if __name__ == '__main__':
   sys.exit(Main(sys.argv[1:]))