Revert of webrtc-internals: dont remove tab

content/browser/resources/media/tab_view.js

 // 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.
 
 /**
  * A TabView provides the ability to create tabs and switch between tabs. It's
  * responsible for creating the DOM and managing the visibility of each tab.
  * The first added tab is active by default and the others hidden.
  */
 var TabView = (function() {
@@ skipping 67 matching lines @@
           this.tabElements_[id].head);
       this.tabElements_[id].body.parentNode.removeChild(
           this.tabElements_[id].body);
 
       delete this.tabElements_[id];
       if (this.activeTabId_ == id) {
         this.switchTab_(Object.keys(this.tabElements_)[0]);
       }
     },
 
-    makeTabRemovable: function(id) {
-      if (!this.tabElements_[id])
-        return;
-      var close = document.createElement('a');
-      close.textContent = '[x]';
-      close.addEventListener('click', function() {
-        this.removeTab(id);
-      }.bind(this));
-      this.tabElements_[id].head.appendChild(close);
-    },
-
     /**
      * Switches the specified tab into view.
      *
      * @param {string} activeId The id the of the tab that should be switched to
      *     active state.
      * @private
      */
     switchTab_: function(activeId) {
       if (this.activeTabId_ && this.tabElements_[this.activeTabId_]) {
         this.tabElements_[this.activeTabId_].body.classList.remove(
@@ skipping 12 matching lines @@
 
     /** Initializes the bar containing the tab heads. */
     initializeHeadBar_: function() {
       this.headBar_ = document.createElement('div');
       this.root_.appendChild(this.headBar_);
       this.headBar_.style.textAlign = 'center';
     },
   };
   return TabView;
 })();