Turning the new launcher back on by default

ash/ash_switches.cc

Index: ash/ash_switches.cc
diff --git a/ash/ash_switches.cc b/ash/ash_switches.cc
index 150799affed47bb5f664fb61e50a55991f952c47..25116880441c6e924b87943f603308586c88c5c2 100644
--- a/ash/ash_switches.cc
+++ b/ash/ash_switches.cc
@@ -70,9 +70,6 @@ const char kAshDisablePerAppLauncher[] = "ash-disable-per-app-launcher";
 // Enables the Oak tree viewer.
 const char kAshEnableOak[] = "ash-enable-oak";
 
-// Disable the new launcher version temporarily by default for the M25 release.
-const char kAshEnablePerAppLauncher[] = "ash-enable-per-app-launcher";
-
 // Enables showing the tray bubble by dragging on the shelf.
 const char kAshEnableTrayDragging[] = "ash-enable-tray-dragging";