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diff --git a/chrome/views/view_container.h b/chrome/views/view_container.h
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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.
+
+#ifndef CHROME_VIEWS_VIEW_CONTAINER_H__
+#define CHROME_VIEWS_VIEW_CONTAINER_H__
+
+#include <atlbase.h>
+#include <atlapp.h>
+#include <atlmisc.h>
+
+namespace ChromeViews {
+
+class RootView;
+class TooltipManager;
+class Accelerator;
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// ViewContainer class
+//
+//   ViewContainer is an abstract class that defines the API that should
+//   be implemented by a CWindow / HWND implementation in order to host a view
+//   hierarchy.
+//
+//   ViewContainer wraps a hierarchy of View objects (see view.h) that
+//   implement painting and flexible layout within the bounds of the
+//   ViewContainer's window.
+//
+//   The ViewContainer is responsible for handling various system events and
+//   forwarding them to the appropriate view.
+//
+/////////////////////////////////////////////////////////////////////////////
+
+class ViewContainer {
+ public:
+
+  // Returns the bounds of this container in the screen coordinate system.
+  // If the receiving view container is a frame which is larger than its
+  // client area, this method returns the client area if including_frame is
+  // false and the frame bounds otherwise. If the receiving view container
+  // is not a frame, including_frame is ignored.
+  virtual void GetBounds(CRect *out, bool including_frame) const = 0;
+
+  // Moves this view container to the front of the Z-Order
+  // If should_activate is TRUE, the window should also become the active
+  // window
+  virtual void MoveToFront(bool should_activate) = 0;
+
+  // Returns the Window HWND associated with this container
+  virtual HWND GetHWND() const = 0;
+
+  // Forces a paint of a specified rectangle immediately.
+  virtual void PaintNow(const CRect& update_rect) = 0;
+
+  // Returns the RootView contained by this container
+  virtual RootView* GetRootView() = 0;
+
+  // Returns whether the view container is visible to the user
+  virtual bool IsVisible() = 0;
+
+  // Returns whether the view container is the currently active window.
+  virtual bool IsActive() = 0;
+
+  // Returns the TooltipManager for this ViewContainer. If this ViewContainer
+  // does not support tooltips, NULL is returned.
+  virtual TooltipManager* GetTooltipManager() {
+    return NULL;
+  }
+
+  // Returns the accelerator given a command id. Returns false if there is
+  // no accelerator associated with a given id, which is a common condition.
+  virtual bool GetAccelerator(int cmd_id,
+                              ChromeViews::Accelerator* accelerator) = 0;
+};
+
+
+
+}
+
+#endif // CHROME_VIEWS_VIEW_CONTAINER_H__