content: Move constrained window code from TabContents to TabContentsWrapper

chrome/browser/ui/constrained_window_tab_helper_delegate.h

+// Copyright (c) 2011 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.
+
+#ifndef CHROME_BROWSER_UI_CONSTRAINED_WINDOW_TAB_HELPER_DELEGATE_H_
+#define CHROME_BROWSER_UI_CONSTRAINED_WINDOW_TAB_HELPER_DELEGATE_H_
+#pragma once
+
+class TabContentsWrapper;
+
+class ConstrainedWindowTabHelperDelegate {
+ public:
+  // Invoked prior to the TabContentsWrapper showing a constrained window.
+  virtual void WillShowConstrainedWindow(TabContentsWrapper* source);
+
+  // Returns true if constrained windows should be focused. Default is true.
+  virtual bool ShouldFocusConstrainedWindow();
+
+  // Changes the blocked state of |wrapper|. TabContents are considered blocked
+  // while displaying a tab modal dialog. During that time renderer host will
+  // ignore any UI interaction within TabContent outside of the currently
+  // displaying dialog.
+  virtual void SetTabContentBlocked(TabContentsWrapper* wrapper, bool blocked);
+
+ protected:
+  virtual ~ConstrainedWindowTabHelperDelegate();
+};
+
+#endif  // CHROME_BROWSER_UI_CONSTRAINED_WINDOW_TAB_HELPER_DELEGATE_H_