Move device monitors out of //media/capture into //media/device_monitors

media/capture/BUILD.gn

 # Copyright 2016 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("//media/media_options.gni")
 import("//testing/test.gni")
 
 component("capture") {
   defines = [ "CAPTURE_IMPLEMENTATION" ]
   sources = [
     "capture_export.h",
     "content/animated_content_sampler.cc",
     "content/animated_content_sampler.h",
     "content/capture_resolution_chooser.cc",
     "content/capture_resolution_chooser.h",
     "content/screen_capture_device_core.cc",
     "content/screen_capture_device_core.h",
     "content/smooth_event_sampler.cc",
     "content/smooth_event_sampler.h",
     "content/thread_safe_capture_oracle.cc",
     "content/thread_safe_capture_oracle.h",
     "content/video_capture_oracle.cc",
     "content/video_capture_oracle.h",
-    "device_monitor_mac.h",
-    "device_monitor_mac.mm",
-    "system_message_window_win.cc",
-    "system_message_window_win.h",
     "video/fake_video_capture_device.cc",
     "video/fake_video_capture_device.h",
     "video/fake_video_capture_device_factory.cc",
     "video/fake_video_capture_device_factory.h",
     "video/file_video_capture_device.cc",
     "video/file_video_capture_device.h",
     "video/file_video_capture_device_factory.cc",
     "video/file_video_capture_device_factory.h",
     "video/linux/v4l2_capture_delegate.cc",
     "video/linux/video_capture_device_chromeos.cc",
@@ skipping 69 matching lines @@
   if (is_mac) {
     deps += [ "//third_party/decklink" ]
     libs = [
       "CoreFoundation.framework",
       "CoreGraphics.framework",
       "CoreVideo.framework",
       "Foundation.framework",
     ]
   }
 
-  if (use_udev) {
-    deps += [ "//device/udev_linux" ]
-    sources += [
-      "device_monitor_udev.cc",
-      "device_monitor_udev.h",
-    ]
-  }
-
   if (is_win) {
     deps += [
       "//media/base",  # For media_switches.
       "//media/base/win",
     ]
     libs = [
       "mf.lib",
       "mfplat.lib",
       "mfreadwrite.lib",
       "mfuuid.lib",
     ]
     ldflags = [
       "/DELAYLOAD:mf.dll",
       "/DELAYLOAD:mfplat.dll",
       "/DELAYLOAD:mfreadwrite.dll",
     ]
 
     # TODO(jschuh): https://crbug.com/167187 fix size_t to int truncations.
     configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
   }
 }
 
 test("capture_unittests") {
   sources = [
     "content/animated_content_sampler_unittest.cc",
     "content/capture_resolution_chooser_unittest.cc",
     "content/smooth_event_sampler_unittest.cc",
     "content/video_capture_oracle_unittest.cc",
-    "system_message_window_win_unittest.cc",
     "video/fake_video_capture_device_unittest.cc",
     "video/mac/video_capture_device_factory_mac_unittest.mm",
     "video/video_capture_device_unittest.cc",
   ]
 
   deps = [
     ":capture",
     "//base/test:run_all_unittests",
     "//base/test:test_support",
     "//media/base:test_support",
     "//media/mojo/interfaces:image_capture",
     "//testing/gmock",
     "//testing/gtest",
     "//ui/gfx:test_support",
   ]
 
   if (is_android) {
     deps += [
       "//media/capture/video/android",
       "//media/capture/video/android:capture_java",
     ]
   }
 
   if (is_win) {
     # TODO(jschuh): https://crbug.com/167187 fix size_t to int truncations.
     configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
   }
 }