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diff --git a/chromeos/display/native_display_delegate_x11.h b/chromeos/display/native_display_delegate_x11.h
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+++ b/chromeos/display/native_display_delegate_x11.h
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+// Copyright 2014 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 CHROMEOS_DISPLAY_NATIVE_DISPLAY_DELEGATE_X11_H_
+#define CHROMEOS_DISPLAY_NATIVE_DISPLAY_DELEGATE_X11_H_
+
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "chromeos/display/output_configurator.h"
+
+typedef XID Window;
+
+struct _XDisplay;
+typedef struct _XDisplay Display;
+struct _XRROutputInfo;
+typedef _XRROutputInfo XRROutputInfo;
+struct _XRRScreenResources;
+typedef _XRRScreenResources XRRScreenResources;
+
+namespace chromeos {
+
+class NativeDisplayDelegateX11
+    : public OutputConfigurator::NativeDisplayDelegate {
+ public:
+  NativeDisplayDelegateX11();
+  virtual ~NativeDisplayDelegateX11();
+
+  // OutputConfigurator::Delegate overrides:
+  virtual void InitXRandRExtension(int* event_base) OVERRIDE;
+  virtual void UpdateXRandRConfiguration(const base::NativeEvent& event)
+      OVERRIDE;
+  virtual void GrabServer() OVERRIDE;
+  virtual void UngrabServer() OVERRIDE;
+  virtual void SyncWithServer() OVERRIDE;
+  virtual void SetBackgroundColor(uint32 color_argb) OVERRIDE;
+  virtual void ForceDPMSOn() OVERRIDE;
+  virtual std::vector<OutputConfigurator::OutputSnapshot> GetOutputs() OVERRIDE;
+  virtual void AddOutputMode(RROutput output, RRMode mode) OVERRIDE;
+  virtual bool ConfigureCrtc(RRCrtc crtc,
+                             RRMode mode,
+                             RROutput output,
+                             int x,
+                             int y) OVERRIDE;
+  virtual void CreateFrameBuffer(
+      int width,
+      int height,
+      const std::vector<OutputConfigurator::OutputSnapshot>& outputs) OVERRIDE;
+  virtual bool GetHDCPState(RROutput id, HDCPState* state) OVERRIDE;
+  virtual bool SetHDCPState(RROutput id, HDCPState state) OVERRIDE;
+
+ private:
+  // Initializes |mode_info| to contain details corresponding to |mode|. Returns
+  // true on success.
+  bool InitModeInfo(RRMode mode, OutputConfigurator::ModeInfo* mode_info);
+
+  // Helper method for GetOutputs() that returns an OutputSnapshot struct based
+  // on the passed-in information. Further initialization is required (e.g.
+  // |selected_mode|, |mirror_mode|, and |touch_device_id|).
+  OutputConfigurator::OutputSnapshot InitOutputSnapshot(RROutput id,
+                                                        XRROutputInfo* info,
+                                                        RRCrtc* last_used_crtc,
+                                                        int index);
+
+  // Destroys unused CRTCs and parks used CRTCs in a way which allows a
+  // framebuffer resize. This is faster than turning them off, resizing,
+  // then turning them back on.
+  void DestroyUnusedCrtcs(
+      const std::vector<OutputConfigurator::OutputSnapshot>& outputs);
+
+  // Returns whether |id| is configured to preserve aspect when scaling.
+  bool IsOutputAspectPreservingScaling(RROutput id);
+
+  Display* display_;
+  Window window_;
+
+  // Initialized when the server is grabbed and freed when it's ungrabbed.
+  XRRScreenResources* screen_;
+
+  DISALLOW_COPY_AND_ASSIGN(NativeDisplayDelegateX11);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROMEOS_DISPLAY_NATIVE_DISPLAY_DELEGATE_X11_H_