Build ZIP archiver in ui/file_manager.

ui/file_manager/BUILD.gn

Index: ui/file_manager/BUILD.gn
diff --git a/ui/file_manager/BUILD.gn b/ui/file_manager/BUILD.gn
index fc7ae5cd4b8eca34db6cbb931f315d0fc24fd2c1..d4e29871a6f255e5dcf0ee846a3071797038af66 100644
--- a/ui/file_manager/BUILD.gn
+++ b/ui/file_manager/BUILD.gn
@@ -13,6 +13,14 @@ grit("resources") {
     "file_manager_resources.pak",
     "file_manager_resources.rc",
   ]
+  pexe = "$root_gen_dir/ui/file_manager/zip_archiver_pnacl.pexe.js"
+  grit_flags = [
+    "-E",
+    "pexe=" + rebase_path(pexe, root_build_dir),
+  ]
+  deps = [
+    "//ui/file_manager/zip_archiver/:zip_archiver(//build/toolchain/nacl:newlib_pnacl)",
+  ]
 }
 
 component("file_manager") {