Add context to gfx::Screen calls in support of simultaneous desktop+ash

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index 922368903b457a64090fc11c568fc89db53feade..890deea7f23bd46521b8f1722d42181b98d0b07d 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -1547,14 +1547,6 @@ const char kWaitForMutex[]                  = "wait-for-mutex";
 #if defined(USE_AURA)
 // Use NativeTabContentsViewAura instead of the default implementation.
 const char kDisableTCVA[]                    = "disable-tcva";
-
-// Opens an Ash window on startup.
-extern const char kOpenAsh[]                 = "open-ash";
-#endif
-
-#if defined(USE_ASH)
-// Enables the wrench menu items to open/close the Ash desktop.
-const char kEnableAsh[]                     = "enable-ash";
 #endif
 
 #ifndef NDEBUG