[remoting android] Add and build host code.

remoting/host/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("//build/util/version.gni")
 import("//remoting/remoting_enable.gni")
 import("//remoting/remoting_locales.gni")
 import("//remoting/remoting_options.gni")
@@ skipping 176 matching lines @@
     if (is_win) {
       deps += [
         ":messages",
         ":remoting_lib_idl",
       ]
     }
 
     if (enable_webrtc) {
       deps += [ "//third_party/webrtc/modules/desktop_capture" ]
     }
+
+    if (is_android) {
+      sources -= [
+        "single_window_desktop_environment.cc",
+        "single_window_desktop_environment.h",
+      ]
+    }
   }
 
   source_set("test_support") {
     testonly = true
 
     sources = [
       "fake_desktop_environment.cc",
       "fake_desktop_environment.h",
       "fake_host_extension.cc",
       "fake_host_extension.h",
@@ skipping 461 matching lines @@
       locale_dir = webapp_locale_dir
 
       encoding = "utf-16"
 
       locales = remoting_locales
     }
 
     # TODO(GYP) More Windows remoting targets from remoting_host_win.gypi
   }
 
-  if (enable_remoting_host) {
+  if (enable_remoting_host && !is_android) {
     executable("remoting_start_host") {
       sources = [
         "setup/host_starter.cc",
         "setup/host_starter.h",
         "setup/start_host.cc",
       ]
 
       deps = [
         "//build/config/sanitizers:deps",
         "//remoting/host/setup",
@@ skipping 269 matching lines @@
           "//remoting/resources",
           "//third_party/icu:icudata",
         ]
       }
     } else {
       group("remoting_me2me_host_archive") {
       }
     }
   }
 }