content: Move constrained window code from TabContents to TabContentsWrapper

chrome/browser/ui/constrained_window_tab_helper.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_H_
+#define CHROME_BROWSER_UI_CONSTRAINED_WINDOW_TAB_HELPER_H_
+#pragma once
+
+#include <deque>
+
+#include "content/browser/tab_contents/tab_contents_observer.h"
+
+class ConstrainedWindow;
+class TabContentsWrapper;
+
+// Per-tab class to manage constrained windows.
+class ConstrainedWindowTabHelper : public TabContentsObserver {
+ public:
+  explicit ConstrainedWindowTabHelper(TabContentsWrapper* tab_contents);
+  virtual ~ConstrainedWindowTabHelper();
+
+  // Adds the given window to the list of child windows. The window will notify
+  // via WillClose() when it is being destroyed.
+  void AddConstrainedDialog(ConstrainedWindow* window);
+
+  // Closes all constrained windows.
+  void CloseConstrainedWindows();
+
+  // Called when a ConstrainedWindow we own is about to be closed.
+  void WillClose(ConstrainedWindow* window);
+
+  // Blocks/unblocks interaction with renderer process.
+  void BlockTabContent(bool blocked);
+
+  // Returns the number of constrained windows in this tab.  Used by tests.
+  size_t constrained_window_count() { return child_windows_.size(); }
+
+  typedef std::deque<ConstrainedWindow*> ConstrainedWindowList;
+
+  // Return an iterator for the first constrained window in this tab contents.
+  ConstrainedWindowList::iterator constrained_window_begin()
+  { return child_windows_.begin(); }

[jam, 2011/09/28 00:08:36]

nit: the brace bracket be on the previous line. also below

+
+  // Return an iterator for the last constrained window in this tab contents.
+  ConstrainedWindowList::iterator constrained_window_end()
+  { return child_windows_.end(); }
+
+ private:
+  // Overridden from TabContentsObserver:
+  virtual void DidNavigateMainFramePostCommit(
+      const content::LoadCommittedDetails& details,
+      const ViewHostMsg_FrameNavigate_Params& params) OVERRIDE;
+  virtual void DidGetIgnoredUIEvent() OVERRIDE;
+  virtual void TabContentsDestroyed(TabContents* tab) OVERRIDE;
+
+  // Our owning TabContentsWrapper.
+  TabContentsWrapper* wrapper_;
+
+  // All active constrained windows.
+  ConstrainedWindowList child_windows_;

[jam, 2011/09/28 00:08:36]

nit: DISALLOW_COPY_AND_ASSIGN?

+};
+
+#endif  // CHROME_BROWSER_UI_CONSTRAINED_WINDOW_TAB_HELPER_H_