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diff --git a/chrome/browser/app_modal_dialog_queue.cc b/chrome/browser/app_modal_dialog_queue.cc
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+++ b/chrome/browser/app_modal_dialog_queue.cc
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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "chrome/browser/app_modal_dialog_queue.h"
+
+#include "chrome/browser/browser_list.h"
+
+// static
+std::queue<ChromeViews::AppModalDialogDelegate*>*
+    AppModalDialogQueue::app_modal_dialog_queue_ = NULL;
+
+// static
+void AppModalDialogQueue::AddDialog(
+    ChromeViews::AppModalDialogDelegate* dialog) {
+  DCHECK(dialog->IsModal());
+  if (!app_modal_dialog_queue_) {
+    app_modal_dialog_queue_ =
+        new std::queue<ChromeViews::AppModalDialogDelegate*>;
+    ShowModalDialog(dialog);
+  }
+
+  app_modal_dialog_queue_->push(dialog);
+}
+
+// static
+void AppModalDialogQueue::ShowNextDialog() {
+  app_modal_dialog_queue_->pop();
+  BrowserList::SetIsShowingAppModalDialog(false);
+  if (!app_modal_dialog_queue_->empty()) {
+    ShowModalDialog(app_modal_dialog_queue_->front());
+  } else {
+    delete app_modal_dialog_queue_;
+    app_modal_dialog_queue_ = NULL;
+  }
+}
+
+// static
+void AppModalDialogQueue::ActivateModalDialog() {
+  if (!app_modal_dialog_queue_->empty())
+    app_modal_dialog_queue_->front()->ActivateModalDialog();
+}
+
+// static
+void AppModalDialogQueue::ShowModalDialog(
+    ChromeViews::AppModalDialogDelegate* dialog) {
+  dialog->ShowModalDialog();
+  BrowserList::SetIsShowingAppModalDialog(true);
+}