Preliminary support for Windows manifests in the GN build.

content/shell/BUILD.gn

Index: content/shell/BUILD.gn
diff --git a/content/shell/BUILD.gn b/content/shell/BUILD.gn
index a79f48cd590779da56fc2d6a3c91a5d4487ea6b4..661b33b73119cafa064de34af1047606dc6d5ea7 100644
--- a/content/shell/BUILD.gn
+++ b/content/shell/BUILD.gn
@@ -4,6 +4,7 @@
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
+import("//build/config/win/manifest.gni")
 import("//tools/grit/repack.gni")
 import("//tools/grit/grit_rule.gni")
 if (is_android) {
@@ -394,12 +395,13 @@ repack("pak") {
 # TODO(GYP): Figure out what this should be on android
 # and make linking this work on the Mac.
 if (!is_android && !is_mac) {
+  # TODO(brettw) when GYP is no longer necessary, delete
+  # content/shell/app/shell.exe.manifest. This file is not used in GN.
   executable("content_shell") {
     testonly = true
 
     # TODO(GYP) mac resource bundle stuff for this target.
     # TODO(GYP) Windows content shell settings:
-    #  - Manifest.
     #  - RC file.
     #  - 'LinkIncremental': '<(msvs_large_module_debug_link_mode)',
     sources = [
@@ -410,6 +412,7 @@ if (!is_android && !is_mac) {
       ":content_shell_lib",
       ":pak",
       "//base/allocator",
+      "//build/win:default_exe_manifest",
     ]
 
     if (is_win) {