Add media router common classes and unittests.

chrome/test/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/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/module_args/v8.gni")
 import("//testing/test.gni")
 
@@ skipping 1466 matching lines @@
       sources += rebase_path(
               unit_gypi_values.chrome_unit_tests_session_service_sources,
               ".",
               "//chrome")
     }
     if (enable_webrtc) {
       sources += rebase_path(unit_gypi_values.chrome_unit_tests_webrtc_sources,
                              ".",
                              "//chrome")
     }
+    if (enable_media_router) {
+      deps += [ "//chrome/browser/media/router:unit_tests" ]
+    }
     if (is_chromeos) {
       sources +=
           rebase_path(unit_gypi_values.chrome_unit_tests_chromeos_sources,
                       ".",
                       "//chrome")
       deps += [
         "//ash/resources",
         "//ui/chromeos/resources",
       ]
       sources -= [
@@ skipping 237 matching lines @@
     #     ]
     #   }
     #   if (!is_mac) {
     #     sources -= [
     #       "perf/mach_ports_performancetest.cc",
     #     ]
     #   }
     # }
   }
 }