CrOS: Move force UI mode switch from switches to ash switches.

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 dff925076b0003c3efab8472ec2723d05c5be22f..664dbb8c8b7b9781dadb8e473229ed5426955423 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -490,15 +490,6 @@ const char kForceFirstRun[]                 = "force-first-run";
 // Forces Chrome to use localNTP instead of server (GWS) NTP.
 const char kForceLocalNtp[]                 = "force-local-ntp";
 
-// Enables required things for the selected UI mode, regardless of whether the
-// chromebook is currently in the selected UI mode.
-const char kForceTabletMode[]               = "force-tablet-mode";
-
-// Values for the kForceTabletMode flag.
-const char kForceTabletModeAuto[]           = "auto";
-const char kForceTabletModeClamshell[]      = "clamshell";
-const char kForceTabletModeTouchView[]      = "touch_view";
-
 // Forces additional Chrome Variation Ids that will be sent in X-Client-Data
 // header, specified as a 64-bit encoded list of numeric experiment ids. Ids
 // prefixed with the character "t" will be treated as Trigger Variation Ids.