Enable Spotlight Actions by default.

ios/chrome/browser/about_flags.mm

Index: ios/chrome/browser/about_flags.mm
diff --git a/ios/chrome/browser/about_flags.mm b/ios/chrome/browser/about_flags.mm
index 245253ec9915db6c7aaf4d66b4a4749e34844669..6265f2c93d4007af3b02b93e9d162db554caf518 100644
--- a/ios/chrome/browser/about_flags.mm
+++ b/ios/chrome/browser/about_flags.mm
@@ -208,11 +208,7 @@ void AppendSwitchesFromExperimentalSettings(base::CommandLine* command_line) {
   }
 
   // Populate command line flag for Spotlight Actions.
-  NSString* enableSpotlightActions =
-      [defaults stringForKey:@"EnableSpotlightActions"];
-  if ([enableSpotlightActions isEqualToString:@"Enabled"]) {
-    command_line->AppendSwitch(switches::kEnableSpotlightActions);
-  } else if ([enableSpotlightActions isEqualToString:@"Disabled"]) {
+  if ([defaults boolForKey:@"DisableSpotlightActions"]) {
     command_line->AppendSwitch(switches::kDisableSpotlightActions);
   }