aura-x11: Add custom web cursor support.

ui/gfx/native_widget_types.h

 // Copyright (c) 2012 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 UI_GFX_NATIVE_WIDGET_TYPES_H_
 #define UI_GFX_NATIVE_WIDGET_TYPES_H_
 #pragma once
 
 #include "build/build_config.h"
 
@@ skipping 86 matching lines @@
 #elif defined(OS_ANDROID)
 class ChromeView;
 #endif
 class SkBitmap;
 
 class AcceleratedSurface;
 
 namespace gfx {
 
 #if defined(USE_AURA)
+#if defined(OS_WIN)
+typedef HCURSOR PlatformCursor;
+#elif defined(OS_LINUX)
+typedef unsigned long PlatformCursor;
+#else
+#typedef void* PlatformCursor;
+#endif
+#endif
+
+#if defined(USE_AURA)
 // See ui/aura/cursor.h for values.
 typedef int NativeCursor;
 typedef aura::Window* NativeView;
 typedef aura::Window* NativeWindow;
 typedef SkRegion* NativeRegion;
 typedef aura::Event* NativeEvent;
 #elif defined(OS_WIN)
 typedef HCURSOR NativeCursor;
 typedef HWND NativeView;
 typedef HWND NativeWindow;
@@ skipping 190 matching lines @@
 #elif defined(OS_ANDROID)
 typedef uint64 AcceleratedWidget;
 const AcceleratedWidget kNullAcceleratedWidget = 0;
 #else
 #error unknown platform
 #endif
 
 }  // namespace gfx
 
 #endif  // UI_GFX_NATIVE_WIDGET_TYPES_H_