Re-Revert "[WebModals] New API for browser-scoped popup management."

apps/app_window.cc

 // Copyright 2014 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 "apps/app_window.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 275 matching lines @@
 
   requested_alpha_enabled_ = new_params.alpha_enabled;
 
   AppsClient* apps_client = AppsClient::Get();
   native_app_window_.reset(
       apps_client->CreateNativeAppWindow(this, new_params));
 
   helper_.reset(new AppWebContentsHelper(
       browser_context_, extension_id_, web_contents, app_delegate_.get()));
 
-  popup_manager_.reset(
-      new web_modal::PopupManager(GetWebContentsModalDialogHost()));
-  popup_manager_->RegisterWith(web_contents);
-
   // Prevent the browser process from shutting down while this window exists.
   apps_client->IncrementKeepAliveCount();
   UpdateExtensionAppIcon();
   AppWindowRegistry::Get(browser_context_)->AddAppWindow(this);
 
   if (new_params.hidden) {
     // Although the window starts hidden by default, calling Hide() here
     // notifies observers of the window being hidden.
     Hide();
   } else {
@@ skipping 793 matching lines @@
         region.bounds.x(),
         region.bounds.y(),
         region.bounds.right(),
         region.bounds.bottom(),
         region.draggable ? SkRegion::kUnion_Op : SkRegion::kDifference_Op);
   }
   return sk_region;
 }
 
 }  // namespace apps