Linux: Remove --wm-user-time-ms command line argument

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 706e9375f094eb8c7fa17b1ecfab393fcf7db01d..5a19551a4982756561d89c6d37b1fccb24798d90 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -1117,9 +1117,6 @@ const char kPasswordStore[]                 = "password-store";
 // The same as the --class argument in X applications.  Overrides the WM_CLASS
 // window property with the given value.
 const char kWmClass[]                       = "class";
-
-// Updates X11DesktopHandler::wm_user_time_ms with the latest X server time.
-const char kWmUserTimeMs[]              = "wm-user-time-ms";
 #endif
 
 #if defined(OS_MACOSX)