Revert of AutoHide Behavior

chrome/browser/ui/ash/chrome_launcher_prefs.cc

Index: chrome/browser/ui/ash/chrome_launcher_prefs.cc
diff --git a/chrome/browser/ui/ash/chrome_launcher_prefs.cc b/chrome/browser/ui/ash/chrome_launcher_prefs.cc
index 303d102c9170d3697b3ff99519d245b4097e954d..57690569f52d72cf6204918e8a9696febc1fcd4d 100644
--- a/chrome/browser/ui/ash/chrome_launcher_prefs.cc
+++ b/chrome/browser/ui/ash/chrome_launcher_prefs.cc
@@ -35,6 +35,7 @@ namespace ash {
 const char kPinnedAppsPrefAppIDPath[] = "id";
 
 const char kShelfAutoHideBehaviorAlways[] = "Always";
+const char kShelfAutoHideBehaviorDefault[] = "Default";
 const char kShelfAutoHideBehaviorNever[] = "Never";
 
 extern const char kShelfAlignmentBottom[] = "Bottom";
@@ -51,7 +52,7 @@ void RegisterChromeLauncherUserPrefs(PrefService* user_prefs) {
                                CreateDefaultPinnedAppsList(),
                                PrefService::SYNCABLE_PREF);
   user_prefs->RegisterStringPref(prefs::kShelfAutoHideBehavior,
-                                 kShelfAutoHideBehaviorNever,
+                                 kShelfAutoHideBehaviorDefault,
                                  PrefService::SYNCABLE_PREF);
   user_prefs->RegisterStringPref(prefs::kShelfAlignment,
                                  kShelfAlignmentBottom,