Enable kBluetoothNextHandsfreeProfile by default

For M84.

Launch bug: http://crbug.com/1062024

Bug: b/150951008

Change-Id: I9943a5295282f028ec19886a0d758cba37a7a879
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2214653Reviewed-by: Heng-ruey Hsu <henryhsu@chromium.org>
Commit-Queue: Hsinyu Chao <hychao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#772097}

chromeos/constants/chromeos_features.cc

@@ -73,7 +73,7 @@ const base::Feature kBluetoothPhoneFilter{"BluetoothPhoneFilter",
 // If enabled, browser will notify Chrome OS audio server to register HFP 1.7
 // to BlueZ, which includes wideband speech feature.
 const base::Feature kBluetoothNextHandsfreeProfile{
-    "BluetoothNextHandsfreeProfile", base::FEATURE_DISABLED_BY_DEFAULT};
+    "BluetoothNextHandsfreeProfile", base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Enable or disables running the Camera App as a System Web App.
 const base::Feature kCameraSystemWebApp{"CameraSystemWebApp",