Change precache URLs to https

Precache manifests and configuration details are fetched via https
instead of http with this change.

BUG=309216

Review URL: https://codereview.chromium.org/435303006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@287723 0039d316-1c4b-4281-b951-d872f2087c98

components/precache/precache_defines.gypi

@@ -6,8 +6,8 @@
   '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 != ""', {