Revert of Convert network hints to Mojo

components/network_hints/common/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.
 
 # GYP version: components/network_hints.gypi:predictor
 source_set("common") {
   sources = [
     "network_hints_common.cc",
     "network_hints_common.h",
+    "network_hints_message_generator.cc",
+    "network_hints_message_generator.h",
+    "network_hints_messages.cc",
+    "network_hints_messages.h",
   ]
 
   deps = [
+    "//base",
+    "//content/public/common",
+    "//ipc",
+    "//ui/accessibility",
     "//url",
   ]
 }