MD Downloads: add a JS unit test for search term splitting

chrome/unit_tests.isolate

 # 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.
 {
   'conditions': [
     ['use_x11==0', {
       'variables': {
         'command': [
           '../testing/test_env.py',
           '<(PRODUCT_DIR)/unit_tests<(EXECUTABLE_SUFFIX)',
@@ skipping 16 matching lines @@
           '--asan=<(asan)',
           '--msan=<(msan)',
           '--tsan=<(tsan)',
         ],
         'files': [
           '../testing/xvfb.py',
           '<(PRODUCT_DIR)/xdisplaycheck<(EXECUTABLE_SUFFIX)',
         ],
       },
     }],
-    ['OS=="android" or OS=="linux" or OS=="win" or OS=="mac"', {
-      'variables': {
-        'files': [
-          '<(PRODUCT_DIR)/test_data/chrome/browser/resources/google_now/',
-          '<(PRODUCT_DIR)/test_data/chrome/browser/resources/print_preview/',
-          '<(PRODUCT_DIR)/test_data/chrome/renderer/resources/extensions/',
-          '<(PRODUCT_DIR)/test_data/chrome/test/data/unit/',
-          '<(PRODUCT_DIR)/test_data/ui/webui/',
-        ],
-      },
-    }],
     ['OS=="android" or OS=="linux" or OS=="mac" or OS=="win"', {
       'variables': {
         'files': [
           '../base/test/data/',
           '../components/test/data/',
           '../extensions/test/data/',
           '../google_apis/test/data/',
           '../net/data/',
           '../third_party/accessibility-audit/axs_testing.js',
           '../third_party/chaijs/chai.js',
@@ skipping 24 matching lines @@
     }],
     ['OS=="linux" or OS=="mac" or OS=="win"', {
       'variables': {
         'files': [
           '../net/tools/testserver/',
           '../testing/test_env.py',
           '../third_party/pyftpdlib/',
           '../third_party/pywebsocket/',
           '../third_party/tlslite/',
           '<(PRODUCT_DIR)/pyproto/google/',
+          '<(PRODUCT_DIR)/test_data/chrome/browser/resources/google_now/',
+          '<(PRODUCT_DIR)/test_data/chrome/browser/resources/md_downloads/',
+          '<(PRODUCT_DIR)/test_data/chrome/browser/resources/print_preview/',
+          '<(PRODUCT_DIR)/test_data/chrome/renderer/resources/extensions/',
+          '<(PRODUCT_DIR)/test_data/chrome/test/data/unit/',
+          '<(PRODUCT_DIR)/test_data/ui/webui/',
         ],
       },
     }],
     ['OS=="linux" or OS=="mac"', {
       'variables': {
         'read_only': 1,
       },
     }],
     ['OS=="mac"', {
       'variables': {
@@ skipping 57 matching lines @@
         ],
       },
     }],
   ],
   'includes': [
     '../base/base.isolate',
     '../gin/v8.isolate',
     '../ui/gl/gl.isolate',
   ],
 }