Componentize app_modal_dialog

components/app_modal_dialogs/app_modal_dialog.cc

Index: components/app_modal_dialogs/app_modal_dialog.cc
diff --git a/chrome/browser/ui/app_modal_dialogs/app_modal_dialog.cc b/components/app_modal_dialogs/app_modal_dialog.cc
similarity index 73%
rename from chrome/browser/ui/app_modal_dialogs/app_modal_dialog.cc
rename to components/app_modal_dialogs/app_modal_dialog.cc
index edd94572dd7e4cb87150d0d69fcf67383d021962..f19f0022bf1218fa46b163bfc4d4725ac955bd95 100644
--- a/chrome/browser/ui/app_modal_dialogs/app_modal_dialog.cc
+++ b/components/app_modal_dialogs/app_modal_dialog.cc
@@ -2,18 +2,33 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/ui/app_modal_dialogs/app_modal_dialog.h"
+#include "components/app_modal_dialogs/app_modal_dialog.h"
 
 #include "base/logging.h"
-#include "chrome/browser/chrome_notification_types.h"
-#include "chrome/browser/ui/app_modal_dialogs/app_modal_dialog_queue.h"
-#include "chrome/browser/ui/app_modal_dialogs/native_app_modal_dialog.h"
-#include "content/public/browser/notification_service.h"
+#include "base/run_loop.h"
+#include "components/app_modal_dialogs/app_modal_dialog_queue.h"
+#include "components/app_modal_dialogs/native_app_modal_dialog.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_delegate.h"
 
 using content::WebContents;
 
+namespace {
+
+AppModalDialogNotifier* notifier_ = NULL;
+
+}  // namespace
+
+AppModalDialogNotifier::AppModalDialogNotifier() {
+  DCHECK(!notifier_);
+  notifier_ = this;
+}
+
+AppModalDialogNotifier::~AppModalDialogNotifier() {
+  DCHECK(notifier_);
+  notifier_ = NULL;
+}
+
 AppModalDialog::AppModalDialog(WebContents* web_contents,
                                const base::string16& title)
     : title_(title),
@@ -30,11 +45,8 @@ AppModalDialog::~AppModalDialog() {
 void AppModalDialog::ShowModalDialog() {
   web_contents_->GetDelegate()->ActivateContents(web_contents_);
   CreateAndShowDialog();
-
-  content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_APP_MODAL_DIALOG_SHOWN,
-      content::Source<AppModalDialog>(this),
-      content::NotificationService::NoDetails());
+  if (notifier_)
+    notifier_->Notify(this);
 }
 
 void AppModalDialog::CreateAndShowDialog() {