From 45c8a93e444a9668214c552a6b3ff86524deba7b Mon Sep 17 00:00:00 2001
From: Jocelyn Liu <yrliou@gmail.com>
Date: Fri, 29 Jun 2018 16:43:24 -0700
Subject: [PATCH] add brave_page_visibility.js

---
 .../settings/brave_page_visibility.js         | 32 +++++++++++++++++++
 .../resources/settings/settings_resources.grd |  3 ++
 ...ources-settings-page_visibility.html.patch |  9 ++++++
 3 files changed, 44 insertions(+)
 create mode 100644 browser/resources/settings/brave_page_visibility.js
 create mode 100644 patches/chrome-browser-resources-settings-page_visibility.html.patch

diff --git a/browser/resources/settings/brave_page_visibility.js b/browser/resources/settings/brave_page_visibility.js
new file mode 100644
index 000000000000..ccbfab8a9165
--- /dev/null
+++ b/browser/resources/settings/brave_page_visibility.js
@@ -0,0 +1,32 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+cr.define('settings', function() {
+  // use value defined in page_visibility.js in guest mode
+  if (loadTimeData.getBoolean('isGuest')) return;
+
+  // We need to specify values for every attribute in pageVisibility instead of
+  // only overriding specific attributes here because chromium does not
+  // explicitly define pageVisibility in page_visibility.js since polymer only
+  // notifies after a property is set.
+  // Use proxy objects here so we only need to write out the attributes we
+  // would like to hide.
+
+  const appearanceHandler = {
+    get: function(obj, prop) {
+      return prop === 'setTheme' ? false : true;
+    }
+  };
+
+  const handler = {
+    get: function(obj, prop) {
+      if (prop === 'appearance') return new Proxy({}, appearanceHandler);
+      return prop === 'a11y' ? false : true;
+    }
+  };
+
+  let proxy = new Proxy({}, handler);
+
+  return { pageVisibility: proxy };
+});
diff --git a/browser/resources/settings/settings_resources.grd b/browser/resources/settings/settings_resources.grd
index 2ee3649d9615..3d8bc025ccd3 100644
--- a/browser/resources/settings/settings_resources.grd
+++ b/browser/resources/settings/settings_resources.grd
@@ -918,6 +918,9 @@
       <structure name="IDR_SETTINGS_PAGE_VISIBILITY_HTML"
                  file="page_visibility.html"
                  type="chrome_html" />
+      <structure name="IDR_SETTINGS_BRAVE_PAGE_VISIBILITY_JS"
+                 file="brave_page_visibility.js"
+                 type="chrome_html" />
       <structure name="IDR_SETTINGS_PAGE_VISIBILITY_JS"
                  file="page_visibility.js"
                  type="chrome_html"
diff --git a/patches/chrome-browser-resources-settings-page_visibility.html.patch b/patches/chrome-browser-resources-settings-page_visibility.html.patch
new file mode 100644
index 000000000000..3176a99f50c3
--- /dev/null
+++ b/patches/chrome-browser-resources-settings-page_visibility.html.patch
@@ -0,0 +1,9 @@
+diff --git a/chrome/browser/resources/settings/page_visibility.html b/chrome/browser/resources/settings/page_visibility.html
+index 8ea50773be028e98aa2d4f90477a05f69f5a476e..6f8314a72295c599bdf97831436562c205509f61 100644
+--- a/chrome/browser/resources/settings/page_visibility.html
++++ b/chrome/browser/resources/settings/page_visibility.html
+@@ -1,3 +1,4 @@
+ <link rel="import" href="chrome://resources/html/cr.html">
+ 
+ <script src="page_visibility.js"></script>
++<script src="brave_page_visibility.js"></script>