Only handle click actions for left & middle buttons

chrome/browser/resources/history/other_devices.js

 // Copyright (c) 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.
 
 /**
  * @fileoverview The section of the history page that shows tabs from sessions
                  on other devices.
  */
 
 ///////////////////////////////////////////////////////////////////////////////
@@ skipping 268 matching lines @@
         this.addHighlightedText_(a, tab.title);
         // Add a tooltip, since it might be ellipsized. The ones that are not
         // necessary will be removed once added to the document, so we can
         // compute sizes.
         a.title = tab.title;
 
         // We need to use this to not lose the ids as we go through other loop
         // turns.
         function makeClickHandler(sessionTag, windowId, tabId) {
           return function(e) {
+            if (e.button > 1)
+              return; // Ignore buttons other than left and middle.
             recordUmaEvent_(HISTOGRAM_EVENT.LINK_CLICKED);
             chrome.send('openForeignSession', [sessionTag, windowId, tabId,
                 e.button, e.altKey, e.ctrlKey, e.metaKey, e.shiftKey]);
             e.preventDefault();
           };
         };
         ['click', 'auxclick'].forEach(function(eventName) {
           a.addEventListener(eventName,
                              makeClickHandler(sessionTag,
                                               String(win.sessionId),
@@ skipping 282 matching lines @@
     devicesView.setSearchText($('search-field').value);
   };
   $('search-field').addEventListener('search', doSearch);
   $('search-button').addEventListener('click', doSearch);
 
   chrome.send('otherDevicesInitialized');
 }
 
 // Add handlers to HTML elements.
 document.addEventListener('DOMContentLoaded', load);