Remove the flag to disable Quick View, since it has been released.

chromeos/chromeos_switches.h

Index: chromeos/chromeos_switches.h
diff --git a/chromeos/chromeos_switches.h b/chromeos/chromeos_switches.h
index ee8420ba147ae1496745908ad8bacffa8b5c076a..64c60aa4426d550677262d52013dfa0683e2ae64 100644
--- a/chromeos/chromeos_switches.h
+++ b/chromeos/chromeos_switches.h
@@ -54,7 +54,6 @@ CHROMEOS_EXPORT extern const char kDisableDataSaverPrompt[];
 CHROMEOS_EXPORT extern const char kDisableDemoMode[];
 CHROMEOS_EXPORT extern const char kDisableDeviceDisabling[];
 CHROMEOS_EXPORT extern const char kDisableEolNotification[];
-CHROMEOS_EXPORT extern const char kDisableFilesQuickView[];
 CHROMEOS_EXPORT extern const char kDisableGaiaServices[];
 CHROMEOS_EXPORT extern const char kDisableHIDDetectionOnOOBE[];
 CHROMEOS_EXPORT extern const char kDisableLoginAnimations[];
@@ -82,7 +81,6 @@ CHROMEOS_EXPORT extern const char kEnableConsumerKiosk[];
 CHROMEOS_EXPORT extern const char kEnableDataSaverPrompt[];
 CHROMEOS_EXPORT extern const char kEnableExperimentalAccessibilityFeatures[];
 CHROMEOS_EXPORT extern const char kEnableExtensionAssetsSharing[];
-CHROMEOS_EXPORT extern const char kEnableFilesQuickView[];
 CHROMEOS_EXPORT extern const char kEnableFirstRunUITransitions[];
 CHROMEOS_EXPORT extern const char kEnableKioskMode[];
 CHROMEOS_EXPORT extern const char kEnableTether[];