Add tablet heuristic detection

base/win/win_util.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.
 
 // =============================================================================
 // PLEASE READ
 //
 // In general, you should not be adding stuff to this file.
 //
 // - If your thing is only used in one place, just put it in a reasonable
@@ skipping 86 matching lines @@
                                         string16* command);
 
 // Sets whether to crash the process during exit. This is inspected by DLLMain
 // and used to intercept unexpected terminations of the process (via calls to
 // exit(), abort(), _exit(), ExitProcess()) and convert them into crashes.
 // Note that not all mechanisms for terminating the process are covered by
 // this. In particular, TerminateProcess() is not caught.
 BASE_EXPORT void SetShouldCrashOnProcessDetach(bool crash);
 BASE_EXPORT bool ShouldCrashOnProcessDetach();
 
+// A tablet by this definition is something that has integrated multi-touch
+// but is not also pen-enabled. For example a Thinkpad X220 tablet is not
+// considered a tabled while a Samsum 700T tablet is.
+BASE_EXPORT bool bool IsMachineATablet();

[grt (UTC plus 2), 2012/09/13 18:15:28]

bool bool -> bool

+
 // Get the size of a struct up to and including the specified member.
 // This is necessary to set compatible struct sizes for different versions
 // of certain Windows APIs (e.g. SystemParametersInfo).
 #define SIZEOF_STRUCT_WITH_SPECIFIED_LAST_MEMBER(struct_name, member) \
     offsetof(struct_name, member) + \
     (sizeof static_cast<struct_name*>(NULL)->member)
 
 }  // namespace win
 }  // namespace base
 
 #endif  // BASE_WIN_WIN_UTIL_H_