Makes ash/wm/common a library

chrome/chrome_tests_unit.gypi

 # Copyright 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.
 {
   'variables': {
     'chrome_unit_tests_sources': [
       # histograms.xml is analyzed by AboutFlagsHistogramTest, so this
       # dependency is needed to make commit bots run unit_tests on
       # histograms.xml changes.
       '../tools/metrics/histograms/histograms.xml',
@@ skipping 2007 matching lines @@
             'test/base/test_browser_window_aura.h',
           ],
         }],
         ['use_ash==1', {
           'sources': [
             'test/base/default_ash_event_generator_delegate.cc',
             'test/base/default_ash_event_generator_delegate.h',
           ],
           'dependencies': [
             '../ash/ash.gyp:ash',
+            '../ash/wm/common/ash_wm_common.gyp:ash_wm_common',
             '../ui/aura/aura.gyp:aura',
             '../ui/aura/aura.gyp:aura_test_support',
           ],
         }],
         ['safe_browsing==1', {
           'sources': [
             'browser/extensions/fake_safe_browsing_database_manager.cc',
             'browser/extensions/fake_safe_browsing_database_manager.h',
           ],
         }],
@@ skipping 968 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }