[Media Router] Add DialMediaSinkService and DeviceDescriptionService

chrome/browser/media/router/BUILD.gn

Index: chrome/browser/media/router/BUILD.gn
diff --git a/chrome/browser/media/router/BUILD.gn b/chrome/browser/media/router/BUILD.gn
index 0ea49de99500d8c5c6afe832afd290b312fb5f61..8523b3192804c2468ab27f746c238d842ff1101d 100644
--- a/chrome/browser/media/router/BUILD.gn
+++ b/chrome/browser/media/router/BUILD.gn
@@ -15,6 +15,7 @@ static_library("router") {
     "//content/public/browser",
     "//content/public/common",
     "//third_party/icu",
+    "//third_party/libxml",
     "//url",
   ]
   sources = [
@@ -22,6 +23,10 @@ static_library("router") {
     "browser_presentation_connection_proxy.h",
     "create_presentation_connection_request.cc",
     "create_presentation_connection_request.h",
+    "device_description_service.cc",
+    "device_description_service.h",
+    "dial_media_sink_service.cc",
+    "dial_media_sink_service.h",
     "issue.cc",
     "issue.h",
     "issue_manager.cc",