Introduce MediaDevicesPermissionChecker.

content/browser/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//media/media_options.gni")
 import("//tools/ipc_fuzzer/ipc_fuzzer.gni")
 
 source_set("browser") {
@@ skipping 818 matching lines @@
     "media/capture/web_contents_video_capture_device.cc",
     "media/capture/web_contents_video_capture_device.h",
     "media/capture/window_activity_tracker.cc",
     "media/capture/window_activity_tracker.h",
     "media/capture/window_activity_tracker_aura.cc",
     "media/capture/window_activity_tracker_aura.h",
     "media/capture/window_activity_tracker_mac.h",
     "media/capture/window_activity_tracker_mac.mm",
     "media/cdm_service_impl.cc",
     "media/cdm_service_impl.h",
+    "media/media_devices_permission_checker.cc",
+    "media/media_devices_permission_checker.h",
     "media/media_internals.cc",
     "media/media_internals.h",
     "media/media_internals_handler.cc",
     "media/media_internals_handler.h",
     "media/media_internals_proxy.cc",
     "media/media_internals_proxy.h",
     "media/media_internals_ui.cc",
     "media/media_internals_ui.h",
     "media/media_web_contents_observer.cc",
     "media/media_web_contents_observer.h",
@@ skipping 1090 matching lines @@
   if (!is_component_build) {
     public_deps = [
       ":browser",
     ]
   } else {
     public_deps = [
       "//third_party/leveldatabase",
     ]
   }
 }