Remove base/scoped_handle_win.h stub and fix up all callers to use the new location and namespace.

chrome/browser/tab_contents/tab_contents.h

Index: chrome/browser/tab_contents/tab_contents.h
diff --git a/chrome/browser/tab_contents/tab_contents.h b/chrome/browser/tab_contents/tab_contents.h
index 79ab5f794fa4e527e75e19c25f5da0fcf3c1d0ea..7ef622c8c58a2e6d1d67eaa311a49ce8961f5a3c 100644
--- a/chrome/browser/tab_contents/tab_contents.h
+++ b/chrome/browser/tab_contents/tab_contents.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
@@ -39,6 +39,10 @@
 #include "gfx/native_widget_types.h"
 #include "net/base/load_states.h"
 
+#if defined(OS_WIN)
+#include "base/win/scoped_handle.h"
+#endif
+
 namespace gfx {
 class Rect;
 }
@@ -1280,7 +1284,7 @@ class TabContents : public PageNavigator,
   // Handle to an event that's set when the page is showing a message box (or
   // equivalent constrained window).  Plugin processes check this to know if
   // they should pump messages then.
-  ScopedHandle message_box_active_;
+  base::win::ScopedHandle message_box_active_;
 #endif
 
   // The time that the last javascript message was dismissed.