Adding a confirmation dialog for It2Me on Mac

remoting/host/it2me/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("//remoting/remoting_enable.gni")
 import("//remoting/remoting_locales.gni")
 import("//remoting/remoting_version.gni")
 
 if (is_win) {
   import("//remoting/host/predefines_win.gni")
 }
 if (is_mac) {
   import("//build/config/mac/rules.gni")
   import("//third_party/icu/config.gni")
 }
 
 source_set("common") {
   sources = [
     "it2me_confirmation_dialog.cc",
     "it2me_confirmation_dialog.h",
     "it2me_confirmation_dialog_android.cc",
     "it2me_confirmation_dialog_linux.cc",
-    "it2me_confirmation_dialog_mac.cc",
+    "it2me_confirmation_dialog_mac.mm",
     "it2me_confirmation_dialog_proxy.cc",
     "it2me_confirmation_dialog_proxy.h",
     "it2me_confirmation_dialog_win.cc",
     "it2me_host.cc",
     "it2me_host.h",
     "it2me_native_messaging_host.cc",
     "it2me_native_messaging_host.h",
   ]
 
   if (is_android) {
@@ skipping 92 matching lines @@
       if (is_official_build) {
         deps += [ "//remoting/host:dpi_aware_uiaccess_exe_manifest" ]
       } else {
         deps += [ "//remoting/host:dpi_aware_exe_manifest" ]
       }
     }
   } else {
     if (is_mac) {
       app_target_type = "mac_app_bundle"
 
+      bundle_data("remote_assistance_host_dialog_icon") {
+        sources = [
+          "//remoting/resources/chromoting128.png",
+        ]
+
+        outputs = [
+          "{{bundle_resources_dir}}/{{source_file_part}}",
+        ]
+      }
+
       # remote_assistance_host-InfoPlist.strings
       foreach(locale, remoting_locales_with_underscores) {
         bundle_data("remote_assistance_host_strings_${locale}_bundle_data") {
           sources = [
             "$root_gen_dir/remoting/host/remote_assistance_host-InfoPlist.strings/$locale.lproj/InfoPlist.strings",
           ]
           outputs = [
             "{{bundle_resources_dir}}/$locale.lproj/{{source_file_part}}",
           ]
           deps = [
@@ skipping 62 matching lines @@
         "//ui/gfx",
       ]
       if (is_mac) {
         foreach(locale, remoting_locales_with_underscores) {
           deps += [
             ":remote_assistance_host_strings_${locale}_bundle_data",
             "//remoting/host:remoting_host_locale_${locale}_bundle_data",
           ]
         }
         deps += [
+          ":remote_assistance_host_dialog_icon",
           ":remote_assistance_host_xibs",
           "//remoting/host:remoting_infoplist_strings",
           "//remoting/resources:copy_locales",
         ]
         if (icu_use_data_file) {
           deps += [ ":remote_assistance_host_resources" ]
         }
       }
 
       if (enable_webrtc) {
         deps += [ "//third_party/libjingle:libjingle_webrtc" ]
       }
 
       if (is_desktop_linux) {
         deps += [ "//build/config/linux/gtk2" ]
       }
     }
   }
 }