Drop support for buildtools/linux32 in the GN wrapper.

gclient_utils.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.
 
 """Generic utils."""
 
 import codecs
 import cStringIO
 import datetime
 import logging
@@ skipping 690 matching lines @@
   buildtools_path = os.path.join(primary_solution, 'buildtools')
   if not os.path.exists(buildtools_path):
     # Buildtools may be in the gclient root.
     gclient_root = FindGclientRoot(os.getcwd())
     buildtools_path = os.path.join(gclient_root, 'buildtools')
   return buildtools_path
 
 
 def GetBuildtoolsPlatformBinaryPath():
   """Returns the full path to the binary directory for the current platform."""
-  # Mac and Windows just have one directory, Linux has two according to whether
-  # it's 32 or 64 bits.
   buildtools_path = GetBuildtoolsPath()
   if not buildtools_path:
     return None
 
   if sys.platform.startswith(('cygwin', 'win')):
     subdir = 'win'
   elif sys.platform == 'darwin':
     subdir = 'mac'
   elif sys.platform.startswith('linux'):
-    if sys.maxsize > 2**32:
       subdir = 'linux64'
-    else:
-      subdir = 'linux32'
   else:
     raise Error('Unknown platform: ' + sys.platform)
   return os.path.join(buildtools_path, subdir)
 
 
 def GetExeSuffix():
   """Returns '' or '.exe' depending on how executables work on this platform."""
   if sys.platform.startswith(('cygwin', 'win')):
     return '.exe'
   return ''
@@ skipping 455 matching lines @@
 def DefaultIndexPackConfig(url=''):
   """Return reasonable default values for configuring git-index-pack.
 
   Experiments suggest that higher values for pack.threads don't improve
   performance."""
   cache_limit = DefaultDeltaBaseCacheLimit()
   result = ['-c', 'core.deltaBaseCacheLimit=%s' % cache_limit]
   if url in THREADED_INDEX_PACK_BLACKLIST:
     result.extend(['-c', 'pack.threads=1'])
   return result