[Chromeshine] Enable chromeshine by default

Now that we're launching to stable, Chromeshine should be on by default.

Change-Id: I3a7176ad933ba4557f97fc81113d891f9e79e739
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1832290Reviewed-by: Natalie Chouinard <chouinard@chromium.org>
Commit-Queue: Patrick Noland <pnoland@chromium.org>
Cr-Commit-Position: refs/heads/master@{#701266}

chrome/browser/android/chrome_feature_list.cc

@@ -580,7 +580,7 @@ const base::Feature kUmaBackgroundSessions{"UMABackgroundSessions",
                                            base::FEATURE_DISABLED_BY_DEFAULT};
 
 const base::Feature kUsageStatsFeature{"UsageStats",
-                                       base::FEATURE_DISABLED_BY_DEFAULT};
+                                       base::FEATURE_ENABLED_BY_DEFAULT};
 
 const base::Feature kUserMediaScreenCapturing{
     "UserMediaScreenCapturing", base::FEATURE_DISABLED_BY_DEFAULT};