Change precache URLs to https

components/precache/precache_defines.gypi

 # Copyright 2013 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.
 
 {
   'variables': {
     # These values are duplicated in the GN build in:
     # //components/precache/core:precache_config
-    'precache_config_settings_url%': 'http://www.gstatic.com/chrome/wifiprefetch/precache_config',
-    'precache_manifest_url_prefix%': 'http://www.gstatic.com/chrome/wifiprefetch/precache_manifest_',
+    'precache_config_settings_url%': 'https://www.gstatic.com/chrome/wifiprefetch/precache_config',
+    'precache_manifest_url_prefix%': 'https://www.gstatic.com/chrome/wifiprefetch/precache_manifest_',
   },
   'conditions': [
     ['precache_config_settings_url != ""', {
       'defines': [
         'PRECACHE_CONFIG_SETTINGS_URL="<(precache_config_settings_url)"',
       ],
     }],
     ['precache_manifest_url_prefix != ""', {
       'defines': [
         'PRECACHE_MANIFEST_URL_PREFIX="<(precache_manifest_url_prefix)"',
       ],
     }],
   ],
 }