Make the notification builder more XPC friendly

chrome/browser/ui/cocoa/notifications/BUILD.gn

Index: chrome/browser/ui/cocoa/notifications/BUILD.gn
diff --git a/ios/public/consumer/base/BUILD.gn b/chrome/browser/ui/cocoa/notifications/BUILD.gn
similarity index 59%
copy from ios/public/consumer/base/BUILD.gn
copy to chrome/browser/ui/cocoa/notifications/BUILD.gn
index eb83ba22b1adcf0d9f15821bbf91574e002c623a..80b46a7de6923a4e9590b404aebfaa71225da1ac 100644
--- a/ios/public/consumer/base/BUILD.gn
+++ b/chrome/browser/ui/cocoa/notifications/BUILD.gn
@@ -2,12 +2,15 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-source_set("base") {
+static_library("common") {
   sources = [
-    "//ios/consumer/base/debugger.mm",
-    "//ios/public/consumer/base/debugger.h",
+    "notification_builder_mac.h",
+    "notification_builder_mac.mm",
   ]
+
   deps = [
     "//base",
+    "//chrome:strings",
+    "//ui/base:base",
   ]
 }