Options: maintain history entries on the parent frame.

chrome/browser/resources/options/content_settings_exceptions_area.js

Index: chrome/browser/resources/options/content_settings_exceptions_area.js
diff --git a/chrome/browser/resources/options/content_settings_exceptions_area.js b/chrome/browser/resources/options/content_settings_exceptions_area.js
index 80b7a9676ed48a0a7d2d389dd56d2155a78f9f58..66a71c93ed679bd2c6d87b056231e740dbcc2268 100644
--- a/chrome/browser/resources/options/content_settings_exceptions_area.js
+++ b/chrome/browser/resources/options/content_settings_exceptions_area.js
@@ -630,6 +630,9 @@ cr.define('options.contentSettings', function() {
      * @param {string} type The content type.
      */
     showList: function(type) {
+      // Update the title for the type that was shown.
+      this.title = loadTimeData.getString(type + 'TabTitle');
+
       var header = this.pageDiv.querySelector('h1');
       header.textContent = loadTimeData.getString(type + '_header');