Enable CrOS Touch Text Editing Redesign.

Design doc: go/cros-touch-text-editing

Bug: b:244116654
Change-Id: I767baa1c59a0a539c0e537667166f8ee83ef031e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4699361
Commit-Queue: Michelle Chen <michellegc@google.com>
Reviewed-by: Mitsuru Oshima <oshima@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1173315}

Author: Michelle

ui/base/ui_base_features.cc

@@ -293,7 +293,12 @@ bool IsDeprecateAltBasedSixPackEnabled() {
 // TODO(b/262297017): Clean up after touch text editing redesign ships.
 BASE_FEATURE(kTouchTextEditingRedesign,
              "TouchTextEditingRedesign",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+#if BUILDFLAG(IS_CHROMEOS)
+             base::FEATURE_ENABLED_BY_DEFAULT
+#else
+             base::FEATURE_DISABLED_BY_DEFAULT
+#endif
+);
 
 bool IsTouchTextEditingRedesignEnabled() {
   return base::FeatureList::IsEnabled(kTouchTextEditingRedesign);