Enable chrome://flags#exo-pointer-lock by default.

BUG=b:203622329,b:227385147,chromium:927521

Change-Id: I22778928488f3c80b13960bde65b635508b47291
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3616551
Commit-Queue: Greg Kerr <kerrnel@chromium.org>
Auto-Submit: Chloe Pelling <cpelling@google.com>
Reviewed-by: Greg Kerr <kerrnel@chromium.org>
Cr-Commit-Position: refs/heads/main@{#999234}

ash/constants/ash_features.cc

@@ -631,9 +631,9 @@ const base::Feature kExoLockNotification{"ExoLockNotification",
 const base::Feature kExoOrdinalMotion{"ExoOrdinalMotion",
                                       base::FEATURE_DISABLED_BY_DEFAULT};
 
-// Enable or disable pointer lock for Crostini windows.
+// Enable or disable pointer lock for Crostini and Borealis windows.
 const base::Feature kExoPointerLock{"ExoPointerLock",
-                                    base::FEATURE_DISABLED_BY_DEFAULT};
+                                    base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Allows RGB Keyboard to test new animations/patterns.
 const base::Feature kExperimentalRgbKeyboardPatterns{