Fix GN build on mac with icu_use_data_file = false

content/shell/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/sanitizers/sanitizers.gni")
 import("//build/config/ui.gni")
 import("//build/config/win/console_app.gni")
 import("//build/config/win/manifest.gni")
 import("//media/media_options.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//tools/grit/repack.gni")
 import("//tools/grit/grit_rule.gni")
 if (is_android) {
   import("//build/config/android/config.gni")
 } else if (is_mac) {
   import("//build/config/mac/rules.gni")
   import("//build/mac/tweak_info_plist.gni")
+  import("//third_party/icu/config.gni")
   import("//v8/gni/v8.gni")
 } else if (is_win) {
   import("//build/win/syzygy/syzygy.gni")
 }
 
 declare_args() {
   content_shell_product_name = "Content Shell"
   content_shell_version = "99.77.34.5"
 }
 
@@ skipping 536 matching lines @@
     sources = [
       "app/English.lproj/HttpAuth.xib",
       "app/English.lproj/MainMenu.xib",
     ]
     output_path = "{{bundle_resources_dir}}/English.lproj"
   }
 
   bundle_data("content_shell_framework_resources") {
     sources = [
       "$root_out_dir/content_shell.pak",
-      "$root_out_dir/icudtl.dat",
       "resources/missingImage.png",
       "resources/textAreaResizeCorner.png",
     ]
 
     public_deps = [
       ":pak",
     ]
 
-    deps = [
-      "//third_party/icu:icudata",
-    ]
+    if (icu_use_data_file) {
+      sources += [ "$root_out_dir/icudtl.dat" ]
+      deps = [
+        "//third_party/icu:icudata",
+      ]
+    }
 
     if (v8_use_external_startup_data) {
       sources += [
         "$root_out_dir/natives_blob.bin",
         "$root_out_dir/snapshot_blob.bin",
       ]
       public_deps += [ "//v8" ]
     }
 
     outputs = [
@@ skipping 143 matching lines @@
   }
 }
 
 mojom("mojo_bindings") {
   sources = [
     "common/layout_test/layout_test_bluetooth_fake_adapter_setter.mojom",
   ]
 
   use_new_wrapper_types = false
 }