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diff --git a/ui/aura/client/capture_client.h b/ui/aura/client/capture_client.h
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+++ b/ui/aura/client/capture_client.h
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+// Copyright (c) 2012 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 UI_AURA_CLIENT_CAPTURE_CLIENT_H_
+#define UI_AURA_CLIENT_CAPTURE_CLIENT_H_
+#pragma once
+
+#include "ui/aura/aura_export.h"
+
+namespace aura {
+class RootWindow;
+class Window;
+
+namespace client {
+
+// An interface implemented by an object that manages input capture.
+class AURA_EXPORT CaptureClient {
+ public:
+  // Does a capture on the |window|.
+  virtual void SetCapture(Window* window) = 0;
+
+  // Releases a capture from the |window|.
+  virtual void ReleaseCapture(Window* window) = 0;
+
+  // Returns the current capture window.
+  virtual Window* GetCaptureWindow() = 0;
+
+ protected:
+  virtual ~CaptureClient() {}
+};
+
+// Sets/Gets the capture client on the RootWindow.
+AURA_EXPORT void SetCaptureClient(RootWindow* root_window,
+                                  CaptureClient* client);
+AURA_EXPORT CaptureClient* GetCaptureClient(RootWindow* root_window);
+
+// A utility function to get the current capture window. Returns NULL
+// if the window doesn't have a root window, or there is no capture window.
+AURA_EXPORT Window* GetCaptureWindow(Window* window);
+
+}  // namespace clients
+}  // namespace aura
+
+#endif  // UI_AURA_CLIENT_CAPTURE_CLIENT_H_