[Nearby] Turn on WebRTC by default

Fixed: 1150301

Change-Id: Iffe9817a796d8c34f34f811230428b0ef0d06993
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2545366Reviewed-by: Josh Nohle <nohle@chromium.org>
Commit-Queue: Josh Nohle <nohle@chromium.org>
Auto-Submit: James Vecore <vecore@google.com>
Cr-Commit-Position: refs/heads/master@{#828692}

chrome/browser/nearby_sharing/common/nearby_share_features.cc

@@ -19,6 +19,6 @@ const base::Feature kNearbySharingDeviceContacts{
 
 // Enables use of WebRTC in Nearby Share.
 const base::Feature kNearbySharingWebRtc{"NearbySharingWebRtc",
-                                         base::FEATURE_DISABLED_BY_DEFAULT};
+                                         base::FEATURE_ENABLED_BY_DEFAULT};
 
 }  // namespace features