Fix bustage by defining NativeCursor on Mac.

base/gfx/native_widget_types.h

 // Copyright (c) 2008 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 BASE_GFX_NATIVE_WIDGET_TYPES_H_
 #define BASE_GFX_NATIVE_WIDGET_TYPES_H_
 
 #include "base/basictypes.h"
 #include "build/build_config.h"
 
@@ skipping 48 matching lines @@
 typedef HWND NativeView;
 typedef HWND NativeWindow;
 typedef HWND NativeEditView;
 typedef HDC NativeDrawingContext;
 typedef HCURSOR NativeCursor;
 #elif defined(OS_MACOSX)
 typedef NSView* NativeView;
 typedef NSWindow* NativeWindow;
 typedef NSTextField* NativeEditView;
 typedef CGContext* NativeDrawingContext;
+typedef void* NativeCursor;
 #elif defined(OS_LINUX)
 typedef GtkWidget* NativeView;
 typedef GtkWindow* NativeWindow;
 typedef GtkWidget* NativeEditView;
 typedef cairo_surface_t* NativeDrawingContext;
 typedef GdkCursor* NativeCursor;
 #endif
 
 // Note: for test_shell we're packing a pointer into the NativeViewId. So, if
 // you make it a type which is smaller than a pointer, you have to fix
@@ skipping 27 matching lines @@
   return reinterpret_cast<NativeViewId>(view);
 }
 #elif defined(OS_LINUX)
 // Not inlined because it involves pulling too many headers.
 NativeViewId IdFromNativeView(NativeView view);
 #endif  // defined(OS_LINUX)
 
 }  // namespace gfx
 
 #endif  // BASE_GFX_NATIVE_WIDGET_TYPES_H_