Add new target for building qa-related targets on the qa waterfall.

chrome/chrome_tests.gypi

 # Copyright (c) 2011 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.
 
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
@@ skipping 3357 matching lines @@
             ],
           },
           'sources': [
             'test/chrome_plugin/test_chrome_plugin.cc',
             'test/chrome_plugin/test_chrome_plugin.def',
             'test/chrome_plugin/test_chrome_plugin.h',
           ],
         },
       ]},  # 'targets'
     ],  # OS=="win"
+    # If you change this condition, make sure you also change it in all.gyp
+    # for the chromium_builder_qa target.
     ['OS=="mac" or OS=="win" or (OS=="linux" and target_arch==python_arch)', {
       'targets': [
         {
           # Documentation: http://dev.chromium.org/developers/testing/pyauto
           'target_name': 'pyautolib',
           'type': 'shared_library',
           'product_prefix': '_',
           'dependencies': [
             'chrome',
             'policy',
@@ skipping 307 matching lines @@
       ]
     }],  # 'coverage!=0'
   ],  # 'conditions'
 }
 
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