Make net_unittests_run work with component=shared_library.

url/url.isolate

 # Copyright 2014 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': [
     ['OS=="linux" and component=="shared_library"', {
       'variables': {
         'isolate_dependency_tracked': [
-          '<(PRODUCT_DIR)/lib/libbase.so',
-          '<(PRODUCT_DIR)/lib/libbase_i18n.so',
-          '<(PRODUCT_DIR)/lib/libbase_prefs.so',
+          '<(PRODUCT_DIR)/lib/liburl_lib.so',
         ],
       },
     }],
     ['OS=="mac" and component=="shared_library"', {
       'variables': {
         'isolate_dependency_tracked': [
-          '<(PRODUCT_DIR)/libbase.dylib',
-          '<(PRODUCT_DIR)/libbase_i18n.dylib',
-          '<(PRODUCT_DIR)/libbase_prefs.dylib',
+          '<(PRODUCT_DIR)/liburl_lib.dylib',
         ],
       },
     }],
     ['OS=="win" and component=="shared_library"', {
       'variables': {
         'isolate_dependency_tracked': [
-          '<(PRODUCT_DIR)/base.dll',
-          '<(PRODUCT_DIR)/base_i18n.dll',
-          '<(PRODUCT_DIR)/base_prefs.dll',
+          '<(PRODUCT_DIR)/url_lib.dll',
         ],
       },
     }],
   ],
-  'includes': [
-    '../build/linux/system.isolate',
-    '../third_party/icu/icu.isolate',
-  ],
 }