Enable Lite Mode rebranding by default

Bug: 909915
Change-Id: Ic64749cede88ed4ccfa0a28163fddde9f7f33e82
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1577489Reviewed-by: Tarun Bansal <tbansal@chromium.org>
Commit-Queue: Robert Ogden <robertogden@chromium.org>
Cr-Commit-Position: refs/heads/master@{#652891}

components/previews/core/previews_features.cc

@@ -97,7 +97,7 @@ const base::Feature kHTTPSServerPreviewsUsingURLLoader{
 
 // Uses 'Lite Mode' strings instead of 'Data Saver'.
 const base::Feature kDataSaverLiteModeRebranding{
-    "DataSaverLiteModeRebranding", base::FEATURE_DISABLED_BY_DEFAULT};
+    "DataSaverLiteModeRebranding", base::FEATURE_ENABLED_BY_DEFAULT};
 
 // When enabled, reloading on a preview will cause the session (5 minute) rule
 // to trigger.