This moves all of the remaining 32-bit linux builders onto 64-bit hosts.

masters/master.chromium.linux/slaves.cfg

 # -*- python -*-
 # ex: set syntax=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.
 
 # See master.experimental/slaves.cfg for documentation.
 
 
@@ skipping 12 matching lines @@
   {
     'master': 'ChromiumLinux',
     'hostname': 'vm906-m1',
     'builder': 'Linux Tests',
     'os': 'linux',
     'version': 'precise',
     'bits': '64',
   },
   {
     'master': 'ChromiumLinux',
-    'hostname': 'vm871-m1',
+    'hostname': 'vm924-m1',
     'builder': 'Linux Tests (dbg)(1)(32)',
     'os': 'linux',
     'version': 'precise',
-    'bits': '32',
+    'bits': '64',
   },
   {
     'master': 'ChromiumLinux',
     'hostname': 'build38-m1',
     'builder': 'Linux Builder (dbg)',
     'os': 'linux',
     'version': 'precise',
     'bits': '64',
   },
   {
     'master': 'ChromiumLinux',
     'builder': 'Linux Builder (dbg)(32)',
-    'hostname': 'build12-m1',
+    'hostname': 'build45-m1',
     'os': 'linux',
     'version': 'precise',
-    'bits': '32',
+    'bits': '64',
   },
   {
     'master': 'ChromiumLinux',
     'hostname': 'vm916-m1',
     'builder': 'Linux Tests (dbg)(1)',
     'os': 'linux',
     'version': 'precise',
     'bits': '64',
   },
   {
@@ skipping 73 matching lines @@
   },
   {
     'master': 'ChromiumLinux',
     'builder': 'Cast Android (dbg)',
     'hostname': 'vm29-m1',
     'os': 'linux',
     'version': 'precise',
     'bits': '64',
   },
 ]