Have content/ create and destroy its own threads.

chrome_frame/chrome_frame.gyp

 # Copyright (c) 2011 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': {
     'chromium_code': 1,
 
     'variables': {
       'version_py_path': '../tools/build/version.py',
@@ skipping 363 matching lines @@
       'target_name': 'chrome_frame_net_tests',
       'type': 'executable',
       'dependencies': [
         '../base/base.gyp:test_support_base',
         '../chrome/chrome.gyp:browser',
         '../chrome/chrome.gyp:debugger',
         '../chrome/chrome.gyp:renderer',
         '../chrome/chrome.gyp:syncapi_core',
         '../chrome/chrome_resources.gyp:chrome_resources',
         '../content/content.gyp:content_gpu',
+        '../content/content.gyp:test_support_content',
         '../net/net.gyp:net',
         '../net/net.gyp:net_test_support',
         '../skia/skia.gyp:skia',
         '../testing/gtest.gyp:gtest',
         '../third_party/icu/icu.gyp:icui18n',
         '../third_party/icu/icu.gyp:icuuc',
         '../ui/ui.gyp:ui_resources',
         'chrome_frame_ie',
         'chrome_tab_idl',
         'npchrome_frame',
@@ skipping 646 matching lines @@
               # Use outputs of this action as inputs for the main target build.
               # Seems as a misnomer but makes this happy on Linux (scons).
               'process_outputs_as_sources': 1,
             },
           ],
         },
       ],
     }, ],  # 'coverage!=0'
   ],  # 'conditions'
 }