DevTools: introduce browser domain for basic target discovery.

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',
     '../cc/cc.gyp:cc',
     '../cc/cc.gyp:cc_surfaces',
     '../components/components.gyp:display_compositor',
@@ skipping 591 matching lines @@
       'browser/devtools/devtools_frontend_host_impl.cc',
       'browser/devtools/devtools_frontend_host_impl.h',
       'browser/devtools/devtools_io_context.cc',
       'browser/devtools/devtools_io_context.h',
       'browser/devtools/devtools_manager.cc',
       'browser/devtools/devtools_manager.h',
       'browser/devtools/devtools_protocol_handler.cc',
       'browser/devtools/devtools_protocol_handler.h',
       'browser/devtools/forwarding_agent_host.cc',
       'browser/devtools/forwarding_agent_host.h',
+      'browser/devtools/protocol/browser_handler.cc',
+      'browser/devtools/protocol/browser_handler.h',
       'browser/devtools/protocol/color_picker.cc',
       'browser/devtools/protocol/color_picker.h',
       'browser/devtools/protocol/devtools_protocol_client.cc',
       'browser/devtools/protocol/devtools_protocol_client.h',
       'browser/devtools/protocol/devtools_protocol_delegate.h',
       'browser/devtools/protocol/dom_handler.cc',
       'browser/devtools/protocol/dom_handler.h',
       'browser/devtools/protocol/emulation_handler.cc',
       'browser/devtools/protocol/emulation_handler.h',
       'browser/devtools/protocol/input_handler.cc',
@@ skipping 1584 matching lines @@
       ],
     }],
     ['OS != "mac" and OS != "android"', {
       'sources!': [
         'browser/gpu/gpu_surface_tracker.cc',
         'browser/gpu/gpu_surface_tracker.h',
       ],
     }],
   ],
 }