| Index: services/ui/ws/platform_display_delegate.h
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| diff --git a/services/ui/ws/platform_display_delegate.h b/services/ui/ws/platform_display_delegate.h
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| index 98b944e222eefb8bd93e0f88c30b2fe0807d3cc2..0358573ffcfa7cdbb2dda4cc0ad503fdb0ce0eec 100644
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| --- a/services/ui/ws/platform_display_delegate.h
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| +++ b/services/ui/ws/platform_display_delegate.h
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| @@ -5,6 +5,10 @@
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|  #ifndef SERVICES_UI_WS_PLATFORM_DISPLAY_DELEGATE_H_
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|  #define SERVICES_UI_WS_PLATFORM_DISPLAY_DELEGATE_H_
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|  
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| +namespace display {
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| +class Display;
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| +}
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| +
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|  namespace ui {
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|  
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|  class Event;
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| @@ -18,6 +22,9 @@ class ServerWindow;
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|  /// and responses to changes in viewport size.
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|  class PlatformDisplayDelegate {
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|   public:
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| +  // Returns a display::Display for this display.
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| +  virtual display::Display GetDisplay() = 0;
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| +
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|    // Returns the root window of this display.
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|    virtual ServerWindow* GetRootWindow() = 0;
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|  
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| 
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