[ResourceScheduler] Enable H2+QUIC throttling by default

content/browser/loader/resource_scheduler.cc

Index: content/browser/loader/resource_scheduler.cc
diff --git a/content/browser/loader/resource_scheduler.cc b/content/browser/loader/resource_scheduler.cc
index 683e120a2068ee4ce87ca45fba97321e290b32d8..e1dcb0aa04ae1c3f52ee34e4c4ee2f09ced62df1 100644
--- a/content/browser/loader/resource_scheduler.cc
+++ b/content/browser/loader/resource_scheduler.cc
@@ -39,7 +39,7 @@ namespace {
 // HTTP/1.1 resources are. Disabling this appears to have negative performance
 // impact, see https://crbug.com/655585.
 const base::Feature kPrioritySupportedRequestsDelayable{
-    "PrioritySupportedRequestsDelayable", base::FEATURE_DISABLED_BY_DEFAULT};
+    "PrioritySupportedRequestsDelayable", base::FEATURE_ENABLED_BY_DEFAULT};
 
 // In the event that many resource requests are started quickly, this feature
 // will periodically yield (e.g., delaying starting of requests) by posting a