Run chrome_app_unittests on win bots.

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 2989 matching lines @@
                 'unit_tests_apk.isolate',
               ],
             },
           ],
         }],
       ],
     }],
     ['test_isolation_mode != "noop"', {
       'targets': [
         {
+          'target_name': 'chrome_app_unittests_run',
+          'type': 'none',
+          'dependencies': [
+            'chrome_app_unittests',
+          ],
+          'includes': [
+            '../build/isolate.gypi',
+          ],
+          'sources': [
+            'chrome_app_unittests.isolate',
+          ],
+        },
+        {
           'target_name': 'unit_tests_run',
           'type': 'none',
           'dependencies': [
             'unit_tests',
           ],
           'includes': [
             '../build/isolate.gypi',
           ],
           'sources': [
             'unit_tests.isolate',
           ],
           'conditions': [
             ['use_x11 == 1', {
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }