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diff --git a/ash/screen_ash.h b/ash/screen_ash.h
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--- /dev/null
+++ b/ash/screen_ash.h
@@ -0,0 +1,62 @@
+// 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 ASH_SCREEN_ASH_H_
+#define ASH_SCREEN_ASH_H_
+#pragma once
+
+#include "base/compiler_specific.h"
+#include "ash/ash_export.h"
+#include "ui/gfx/insets.h"
+#include "ui/gfx/screen.h"
+
+namespace aura {
+class RootWindow;
+}
+
+namespace ash {
+
+// Aura implementation of gfx::Screen. Implemented here to avoid circular
+// dependencies.
+class ASH_EXPORT ScreenAsh : public gfx::Screen {
+ public:
+  explicit ScreenAsh(aura::RootWindow* root_window);
+  virtual ~ScreenAsh();
+
+  void set_work_area_insets(const gfx::Insets& insets) {
+    work_area_insets_ = insets;
+  }
+  const gfx::Insets& work_area_insets() const { return work_area_insets_; }
+
+ protected:
+  virtual gfx::Point GetCursorScreenPointImpl() OVERRIDE;
+  virtual gfx::Rect GetMonitorWorkAreaNearestWindowImpl(
+      gfx::NativeView view) OVERRIDE;
+  virtual gfx::Rect GetMonitorAreaNearestWindowImpl(
+      gfx::NativeView view) OVERRIDE;
+  virtual gfx::Rect GetMonitorWorkAreaNearestPointImpl(
+      const gfx::Point& point) OVERRIDE;
+  virtual gfx::Rect GetMonitorAreaNearestPointImpl(
+      const gfx::Point& point) OVERRIDE;
+  virtual gfx::NativeWindow GetWindowAtCursorScreenPointImpl() OVERRIDE;
+  virtual gfx::Size GetPrimaryMonitorSizeImpl() OVERRIDE;
+  virtual int GetNumMonitorsImpl() OVERRIDE;
+
+ private:
+  // We currently support only one monitor. These two methods return the bounds
+  // and work area.
+  gfx::Rect GetBounds();
+  gfx::Rect GetWorkAreaBounds();
+
+  // Insets for the work area.
+  gfx::Insets work_area_insets_;
+
+  aura::RootWindow* root_window_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScreenAsh);
+};
+
+}  // namespace ash
+
+#endif  // ASH_SCREEN_ASH_H_