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

components/web_modal/web_contents_modal_dialog_manager.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 "components/web_modal/web_contents_modal_dialog_manager.h"
 
 #include "components/web_modal/web_contents_modal_dialog_manager_delegate.h"
 #include "content/public/browser/navigation_details.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/render_view_host.h"
@@ skipping 40 matching lines @@
     BlockWebContentsInteraction(true);
     if (delegate_ && delegate_->IsWebContentsVisible(web_contents()))
       child_dialogs_.back()->manager->Show();
   }
 }
 
 bool WebContentsModalDialogManager::IsDialogActive() const {
   return !child_dialogs_.empty();
 }
 
-void WebContentsModalDialogManager::FocusTopmostDialog() {
+void WebContentsModalDialogManager::FocusTopmostDialog() const {
   DCHECK(!child_dialogs_.empty());
   child_dialogs_.front()->manager->Focus();
 }
 
 content::WebContents* WebContentsModalDialogManager::GetWebContents() const {
   return web_contents();
 }
 
 void WebContentsModalDialogManager::WillClose(
     NativeWebContentsModalDialog dialog) {
@@ skipping 108 matching lines @@
 }
 
 void WebContentsModalDialogManager::DidAttachInterstitialPage() {
   // TODO(wittman): Test closing on interstitial webui works properly on Mac.
 #if defined(USE_AURA)
   CloseAllDialogs();
 #endif
 }
 
 }  // namespace web_modal