Move all callers of GetHomeDir() to PathService::Get(base::DIR_HOME).

chromeos/chromeos_switches.cc

Index: chromeos/chromeos_switches.cc
diff --git a/chromeos/chromeos_switches.cc b/chromeos/chromeos_switches.cc
index e5836867bf330322ba7d2d0569c024f744d7cf95..b0cab55981636bcf1cca609da481109187bce30e 100644
--- a/chromeos/chromeos_switches.cc
+++ b/chromeos/chromeos_switches.cc
@@ -134,6 +134,9 @@ const char kHasChromeOSKeyboard[]           = "has-chromeos-keyboard";
 // If true, the Chromebook has a keyboard with a diamond key.
 const char kHasChromeOSDiamondKey[]         = "has-chromeos-diamond-key";
 
+// Defines user homedir. This defaults to primary user homedir.
+const char kHomedir[]           = "homedir";
+
 // If true, profile selection in UserManager will always return active user's
 // profile.
 // TODO(nkostlyev): http://crbug.com/364604 - Get rid of this switch after we