Bring up a content settings icon for ungestured registerProtocolHandler call.

chrome/chrome_dll.gypi

 # Copyright (c) 2012 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.
 {
   'conditions': [
     ['OS=="mac" or OS=="win"', {
       'targets': [
         {
           'target_name': 'chrome_dll',
           'type': 'none',
@@ skipping 231 matching lines @@
                 'app/nibs/ChromeToMobileBubble.xib',
                 'app/nibs/CollectedCookies.xib',
                 'app/nibs/CookieDetailsView.xib',
                 'app/nibs/ContentBlockedCookies.xib',
                 'app/nibs/ContentBlockedImages.xib',
                 'app/nibs/ContentBlockedJavaScript.xib',
                 'app/nibs/ContentBlockedMixedScript.xib',
                 'app/nibs/ContentBlockedPlugins.xib',
                 'app/nibs/ContentBlockedPopups.xib',
                 'app/nibs/ContentBlockedGeolocation.xib',
+                'app/nibs/ContentProtocolHandlers.xib',
                 'app/nibs/DownloadItem.xib',
                 'app/nibs/DownloadShelf.xib',
                 'app/nibs/EditSearchEngine.xib',
                 'app/nibs/ExtensionInstallPrompt.xib',
                 'app/nibs/ExtensionInstallPromptBundle.xib',
                 'app/nibs/ExtensionInstallPromptInline.xib',
                 'app/nibs/ExtensionInstallPromptNoWarnings.xib',
                 'app/nibs/ExtensionInstalledBubble.xib',
                 'app/nibs/ExtensionInstalledBubbleBundle.xib',
                 'app/nibs/FindBar.xib',
@@ skipping 276 matching lines @@
                   ],
                 }],
               ],  # conditions
             }],  # OS=="mac"
           ],  # conditions
         },  # target chrome_dll
       ],  # targets
     }],  # OS=="mac" or OS=="win"
   ],
 }