Add media/test/data to content_browsertests and browser_tests isolate files.

chrome/browser_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.
 {
   'includes': [
     'chrome.isolate',
   ],
   'conditions': [
     ['OS=="linux"', {
       'variables': {
@@ skipping 49 matching lines @@
           '<(PRODUCT_DIR)/test_page.css',
           'browser/policy/test/asn1der.py',
           'browser/policy/test/policy_testserver.py',
           'browser/safe_browsing/safe_browsing_testserver.py',
           'common/extensions/docs/examples/apps/calculator/app/controller.js',
           'common/extensions/docs/examples/apps/calculator/app/model.js',
           'common/extensions/docs/examples/apps/calculator/app/view.js',
         ],
         'isolate_dependency_untracked': [
           '../content/test/data/',
+          '../media/test/data/',
           '../net/data/',
           '../net/tools/testserver/',
           '../third_party/WebKit/Tools/Scripts/',
           '../third_party/pyftpdlib/',
           '../third_party/pywebsocket/',
           '../third_party/safe_browsing/',
           '../third_party/simplejson/',
           '../third_party/tlslite/',
           '<(PRODUCT_DIR)/nacl_test_data/',
           '<(PRODUCT_DIR)/pnacl/',
@@ skipping 77 matching lines @@
     }],
     ['chromeos==1', {
       'variables': {
         'isolate_dependency_untracked': [
           '<(PRODUCT_DIR)/chromevox_test_data/',
         ],
       },
     }],
   ],
 }