egl: Use khronos version of __APPLE__ section in eglplatform.h

Bug: 769415
Change-Id: I8e16a2a35286144eaa2d97b4d5f7cf239a00a8e5
Reviewed-on: https://chromium-review.googlesource.com/703739Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Brian Anderson <brianderson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#506957}

third_party/khronos/EGL/eglplatform.h

@@ -77,7 +77,7 @@ typedef HDC     EGLNativeDisplayType;
 typedef HBITMAP EGLNativePixmapType;
 typedef HWND    EGLNativeWindowType;
 
-#elif defined(__WINSCW__) || defined(__SYMBIAN32__)
+#elif defined(__APPLE__) || defined(__WINSCW__) || defined(__SYMBIAN32__)  /* Symbian */
 
 typedef int   EGLNativeDisplayType;
 typedef void *EGLNativeWindowType;
@@ -109,19 +109,6 @@ typedef Display *EGLNativeDisplayType;
 typedef Pixmap   EGLNativePixmapType;
 typedef Window   EGLNativeWindowType;
 
-#elif defined(__APPLE__)
-
-/* Chromium-specific __APPLE__ EGLNative* definition */
-typedef void          *EGLNativeDisplayType;
-typedef int            EGLNativePixmapType;
-#ifdef __OBJC__
-@class NSView;
-typedef NSView *EGLNativeWindowType;
-#else
-struct NSView;
-typedef struct NSView *EGLNativeWindowType;
-#endif  // __OBJC__
-
 #else
 #error "Platform not recognized"
 #endif