Fix up unused includes from chrome/browser/extensions to the rest of chrome/browser.

chrome/browser/extensions/extension_error_ui_default.cc

 // 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.
 
 #include "chrome/browser/extensions/extension_error_ui_default.h"
 
 #include "base/logging.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/chrome_pages.h"
-#include "chrome/browser/ui/host_desktop.h"
 
 ExtensionErrorUIDefault::ExtensionErrorUIDefault(
     ExtensionService* extension_service)
     : ExtensionErrorUI(extension_service),
       browser_(NULL),
       ALLOW_THIS_IN_INITIALIZER_LIST(global_error_(
           new ExtensionGlobalError(this))) {
 }
 
 ExtensionErrorUIDefault::~ExtensionErrorUIDefault() {
@@ skipping 81 matching lines @@
 void ExtensionErrorUIDefault::ExtensionGlobalError::
     BubbleViewCancelButtonPressed(Browser* browser) {
   error_ui_->BubbleViewCancelButtonPressed();
 }
 
 // static
 ExtensionErrorUI* ExtensionErrorUI::Create(
     ExtensionService* extension_service) {
   return new ExtensionErrorUIDefault(extension_service);
 }