Change PluginWindowHandle type to be bool on Mac

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_
 
 #include "build/build_config.h"
 
 #if defined(OS_ANDROID)
@@ skipping 215 matching lines @@
 // browser it will never work on Mac or Linux and is fundamentally broken.
 
 // Please do not call this from outside the browser. It won't work; the name
 // should give you a subtle hint.
 static inline NativeView NativeViewFromIdInBrowser(NativeViewId id) {
   return reinterpret_cast<NativeView>(id);
 }
 #endif  // defined(OS_POSIX)
 
 // PluginWindowHandle is an abstraction wrapping "the types of windows
-// used by NPAPI plugins".  On Windows it's an HWND, on X it's an X
+// used by NPAPI plugins". On Windows it's an HWND, on X it's an X
 // window id.
 #if defined(OS_WIN)
   typedef HWND PluginWindowHandle;
   const PluginWindowHandle kNullPluginWindow = NULL;
 #elif defined(USE_X11)
   typedef unsigned long PluginWindowHandle;
   const PluginWindowHandle kNullPluginWindow = 0;
-#elif defined(USE_AURA) && defined(OS_MACOSX)
-  // Mac-Aura uses NSView-backed GLSurface.  Regular Mac does not.
-  // TODO(dhollowa): Rationalize these two definitions. http://crbug.com/104551.
-  typedef NSView* PluginWindowHandle;
-  const PluginWindowHandle kNullPluginWindow = 0;
 #elif defined(OS_ANDROID)
   typedef uint64 PluginWindowHandle;
   const PluginWindowHandle kNullPluginWindow = 0;
 #elif defined(USE_OZONE)
   typedef intptr_t PluginWindowHandle;
   const PluginWindowHandle kNullPluginWindow = 0;
 #else
-  // On OS X we don't have windowed plugins.
-  // We use a NULL/0 PluginWindowHandle in shared code to indicate there
-  // is no window present, so mirror that behavior here.
-  //
-  // The GPU plugin is currently an exception to this rule. As of this
-  // writing it uses some NPAPI infrastructure, and minimally we need
-  // to identify the plugin instance via this window handle. When the
-  // GPU plugin becomes a full-on GPU process, this typedef can be
-  // returned to a bool. For now we use a type large enough to hold a
-  // pointer on 64-bit architectures in case we need this capability.
-  typedef uint64 PluginWindowHandle;
+  // On Mac we don't have windowed plugins. We use a NULL/0 PluginWindowHandle
+  // in shared code to indicate there is no window present.
+  typedef bool PluginWindowHandle;
   const PluginWindowHandle kNullPluginWindow = 0;
 #endif
 
 enum SurfaceType {
   EMPTY,
   NATIVE_DIRECT,
   NATIVE_TRANSPORT,
   TEXTURE_TRANSPORT
 };
 
@@ skipping 40 matching lines @@
 #elif defined(USE_OZONE)
 typedef intptr_t AcceleratedWidget;
 const AcceleratedWidget kNullAcceleratedWidget = 0;
 #else
 #error unknown platform
 #endif
 
 }  // namespace gfx
 
 #endif  // UI_GFX_NATIVE_WIDGET_TYPES_H_