Start moving core pieces of Chrome multi-process code to src\content.

chrome/browser/tab_contents/constrained_window.h

Index: chrome/browser/tab_contents/constrained_window.h
===================================================================
--- chrome/browser/tab_contents/constrained_window.h	(revision 75368)
+++ chrome/browser/tab_contents/constrained_window.h	(working copy)
@@ -6,57 +6,7 @@
 #define CHROME_BROWSER_TAB_CONTENTS_CONSTRAINED_WINDOW_H_
 #pragma once
 
-#include "build/build_config.h"
+// TODO(jam): remove this file when all files have been converted.
+#include "content/browser/tab_contents/constrained_window.h"
 
-// The different platform specific subclasses use different delegates for their
-// dialogs.
-#if defined(OS_WIN)
-namespace views {
-class WindowDelegate;
-class DialogDelegate;
-}
-typedef views::WindowDelegate ConstrainedWindowDelegate;
-typedef views::DialogDelegate ConstrainedDialogDelegate;
-#elif defined(OS_MACOSX)
-class ConstrainedWindowMacDelegate;
-class ConstrainedWindowMacDelegateSystemSheet;
-typedef ConstrainedWindowMacDelegate ConstrainedWindowDelegate;
-typedef ConstrainedWindowMacDelegateSystemSheet ConstrainedDialogDelegate;
-#elif defined(TOOLKIT_USES_GTK)
-class ConstrainedWindowGtkDelegate;
-typedef ConstrainedWindowGtkDelegate ConstrainedWindowDelegate;
-typedef ConstrainedWindowGtkDelegate ConstrainedDialogDelegate;
-#endif
-
-class TabContents;
-
-///////////////////////////////////////////////////////////////////////////////
-// ConstrainedWindow
-//
-//  This interface represents a window that is constrained to a TabContents'
-//  bounds.
-//
-class ConstrainedWindow {
- public:
-  // Create a Constrained Window that contains a platform specific client
-  // area. Typical uses include the HTTP Basic Auth prompt. The caller must
-  // provide a delegate to describe the content area and to respond to events.
-  static ConstrainedWindow* CreateConstrainedDialog(
-      TabContents* owner,
-      ConstrainedWindowDelegate* delegate);
-
-  // Makes the Constrained Window visible. Only one Constrained Window is shown
-  // at a time per tab.
-  virtual void ShowConstrainedWindow() = 0;
-
-  // Closes the Constrained Window.
-  virtual void CloseConstrainedWindow() = 0;
-
-  // Sets focus on the Constrained Window.
-  virtual void FocusConstrainedWindow() {}
-
- protected:
-  virtual ~ConstrainedWindow() {}
-};
-
 #endif  // CHROME_BROWSER_TAB_CONTENTS_CONSTRAINED_WINDOW_H_