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diff --git a/ANGLE/src/libEGL/Display.h b/ANGLE/src/libEGL/Display.h
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+++ b/ANGLE/src/libEGL/Display.h
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+//
+// Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// Display.h: Defines the egl::Display class, representing the abstract
+// display on which graphics are drawn. Implements EGLDisplay.
+// [EGL 1.4] section 2.1.2 page 3.
+
+#ifndef INCLUDE_DISPLAY_H_
+#define INCLUDE_DISPLAY_H_
+
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#include <d3d9.h>
+
+#include <set>
+
+#include "libGLESv2/Context.h"
+
+#include "libEGL/Config.h"
+#include "libEGL/Surface.h"
+
+namespace egl
+{
+class Display
+{
+  public:
+    Display(HDC deviceContext);
+
+    ~Display();
+
+    bool initialize();
+    void terminate();
+
+    virtual void startScene();
+    virtual void endScene();
+
+    bool getConfigs(EGLConfig *configs, const EGLint *attribList, EGLint configSize, EGLint *numConfig);
+    bool getConfigAttrib(EGLConfig config, EGLint attribute, EGLint *value);
+
+    egl::Surface *createWindowSurface(HWND window, EGLConfig config);
+    EGLContext createContext(EGLConfig configHandle);
+
+    void destroySurface(egl::Surface *surface);
+    void destroyContext(gl::Context *context);
+
+    bool isInitialized();
+    bool isValidConfig(EGLConfig config);
+    bool isValidContext(gl::Context *context);
+    bool isValidSurface(egl::Surface *surface);
+    bool hasExistingWindowSurface(HWND window);
+
+    void setSwapInterval(GLint interval);
+    DWORD getPresentInterval();
+    static DWORD convertInterval(GLint interval);
+
+    virtual IDirect3DDevice9 *getDevice();
+    virtual D3DCAPS9 getDeviceCaps();
+
+  private:
+    DISALLOW_COPY_AND_ASSIGN(Display);
+    const HDC mDc;
+
+    UINT mAdapter;
+    D3DDEVTYPE mDeviceType;
+    IDirect3D9 *mD3d9;
+    IDirect3DDevice9 *mDevice;
+    D3DCAPS9 mDeviceCaps;
+
+    bool mSceneStarted;
+    GLint mSwapInterval;
+    EGLint mMaxSwapInterval;
+    EGLint mMinSwapInterval;
+    DWORD mPresentInterval;
+
+    typedef std::set<Surface*> SurfaceSet;
+    SurfaceSet mSurfaceSet;
+
+    ConfigSet mConfigSet;
+
+    typedef std::set<gl::Context*> ContextSet;
+    ContextSet mContextSet;
+};
+}
+
+#endif   // INCLUDE_DISPLAY_H_