[DevTools] Expose DevToolsAgentHost for OOPIF, display it in chrome://inspect.

content/content_tests.gypi

 # Copyright (c) 2013 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': {
     'layouttest_support_content_sources': [
       'public/test/layouttest_support.h',
       'public/test/nested_message_pump_android.cc',
       'public/test/nested_message_pump_android.h',
@@ skipping 182 matching lines @@
       'browser/battery_status/battery_monitor_integration_browsertest.cc',
       'browser/bookmarklet_browsertest.cc',
       'browser/browser_side_navigation_browsertest.cc',
       'browser/child_process_launcher_browsertest.cc',
       'browser/child_process_security_policy_browsertest.cc',
       'browser/compositor/image_transport_factory_browsertest.cc',
       'browser/cross_site_transfer_browsertest.cc',
       'browser/database_browsertest.cc',
       'browser/device_sensors/device_inertial_sensor_browsertest.cc',
       'browser/devtools/protocol/devtools_protocol_browsertest.cc',
+      'browser/devtools/site_per_process_devtools_browsertest.cc',
       'browser/dom_storage/dom_storage_browsertest.cc',
       'browser/download/download_browsertest.cc',
       'browser/download/drag_download_file_browsertest.cc',
       'browser/download/mhtml_generation_browsertest.cc',
       'browser/download/save_package_browsertest.cc',
       'browser/fileapi/file_system_browsertest.cc',
       'browser/frame_host/frame_tree_browsertest.cc',
       'browser/frame_host/navigation_controller_impl_browsertest.cc',
       'browser/frame_host/render_frame_host_impl_browsertest.cc',
       'browser/frame_host/render_frame_host_manager_browsertest.cc',
@@ skipping 1934 matching lines @@
                   'files': ['<(PRODUCT_DIR)/libnpapi_test_plugin.so'],
                 },
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }