Fix "unreachable code" warnings (MSVC warning 4702) in chrome/browser/.

chrome/browser/process_singleton_win.cc

Index: chrome/browser/process_singleton_win.cc
===================================================================
--- chrome/browser/process_singleton_win.cc	(revision 256983)
+++ chrome/browser/process_singleton_win.cc	(working copy)
@@ -196,8 +196,7 @@
   // to relaunch desktop launched chrome into immersive mode through 'relaunch'
   // menu. In case of Aura, we will use delegate_execute to do the relaunch.
   return false;
-#endif
-
+#else
   if (base::win::GetVersion() < base::win::VERSION_WIN8)
     return false;
 
@@ -229,6 +228,7 @@
     return reg_value == 1;
   }
   return base::win::IsTouchEnabledDevice();
+#endif
 }
 
 }  // namespace