Enable SignedExchangeReportingForDistributors by default

Bug: 910516
Change-Id: Iad6e51586678a3b391409d0f6526f62781d677a3
Reviewed-on: https://chromium-review.googlesource.com/c/1493688Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Commit-Queue: Tsuyoshi Horo <horo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#636554}

content/public/common/content_features.cc

@@ -435,8 +435,7 @@ const base::Feature kSharedArrayBuffer {
 // Signed Exchange Reporting for distributors
 // https://www.chromestatus.com/features/5687904902840320
 const base::Feature kSignedExchangeReportingForDistributors{
-    "SignedExchangeReportingForDistributors",
-    base::FEATURE_DISABLED_BY_DEFAULT};
+    "SignedExchangeReportingForDistributors", base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Origin-Signed HTTP Exchanges (for WebPackage Loading)
 // https://www.chromestatus.com/features/5745285984681984