DevTools: remove the WorkerDevToolsManager base - implementations are diverging.

content/content_browser.gypi

 # 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.
 
 {
   'dependencies': [
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../device/vibration/vibration.gyp:device_vibration',
     '../device/vibration/vibration.gyp:device_vibration_mojo_bindings',
@@ skipping 527 matching lines @@
       'browser/devtools/service_worker_devtools_agent_host.cc',
       'browser/devtools/service_worker_devtools_agent_host.h',
       'browser/devtools/service_worker_devtools_manager.cc',
       'browser/devtools/service_worker_devtools_manager.h',
       'browser/devtools/shared_worker_devtools_agent_host.cc',
       'browser/devtools/shared_worker_devtools_agent_host.h',
       'browser/devtools/shared_worker_devtools_manager.cc',
       'browser/devtools/shared_worker_devtools_manager.h',
       'browser/devtools/worker_devtools_agent_host.cc',
       'browser/devtools/worker_devtools_agent_host.h',
-      'browser/devtools/worker_devtools_manager.cc',
-      'browser/devtools/worker_devtools_manager.h',
       'browser/dom_storage/dom_storage_area.cc',
       'browser/dom_storage/dom_storage_area.h',
       'browser/dom_storage/dom_storage_context_impl.cc',
       'browser/dom_storage/dom_storage_context_impl.h',
       'browser/dom_storage/dom_storage_context_wrapper.cc',
       'browser/dom_storage/dom_storage_context_wrapper.h',
       'browser/dom_storage/dom_storage_database.cc',
       'browser/dom_storage/dom_storage_database.h',
       'browser/dom_storage/dom_storage_database_adapter.h',
       'browser/dom_storage/dom_storage_host.cc',
@@ skipping 1416 matching lines @@
         'browser/media/media_web_contents_observer.h',
       ],
     }],
     ['OS == "linux" and use_openssl==1', {
       'dependencies': [
         '../third_party/boringssl/boringssl.gyp:boringssl',
       ],
     }],
   ],
 }