Added native EGL types for pepper platform.

ppapi/lib/gl/include/EGL/eglplatform.h

Index: ppapi/lib/gl/include/EGL/eglplatform.h
===================================================================
--- ppapi/lib/gl/include/EGL/eglplatform.h	(revision 69281)
+++ ppapi/lib/gl/include/EGL/eglplatform.h	(working copy)
@@ -67,41 +67,12 @@
  * implementations.
  */
 
-#if defined(_WIN32) || defined(__VC32__) && !defined(__CYGWIN__) && !defined(__SCITECH_SNAP__) /* Win32 and WinCE */
-#ifndef WIN32_LEAN_AND_MEAN
-#define WIN32_LEAN_AND_MEAN 1
-#endif
-#include <windows.h>
+#include "ppapi/c/pp_instance.h"
 
-typedef HDC     EGLNativeDisplayType;
-typedef HBITMAP EGLNativePixmapType;
-typedef HWND    EGLNativeWindowType;
+typedef PP_Instance EGLNativeDisplayType;
+typedef PP_Instance EGLNativeWindowType;
+typedef khronos_int32_t EGLNativePixmapType;  // Not supported.
 
-#elif defined(__WINSCW__) || defined(__SYMBIAN32__)  /* Symbian */
-
-typedef int   EGLNativeDisplayType;
-typedef void *EGLNativeWindowType;
-typedef void *EGLNativePixmapType;
-
-#elif defined(__unix__)
-
-/* X11 (tentative)  */
-#include <X11/Xlib.h>
-#include <X11/Xutil.h>
-
-typedef Display *EGLNativeDisplayType;
-typedef Pixmap   EGLNativePixmapType;
-typedef Window   EGLNativeWindowType;
-
-#else
-/* #error "Platform not recognized" */
-
-typedef int EGLNativeDisplayType;
-typedef int EGLNativePixmapType;
-typedef int EGLNativeWindowType;
-
-#endif
-
 /* EGL 1.2 types, renamed for consistency in EGL 1.3 */
 typedef EGLNativeDisplayType NativeDisplayType;
 typedef EGLNativePixmapType  NativePixmapType;