Exposes QUIC's migrate_sessions_early flag to cronet users.

R=mef@chromium.org, pauljensen@chromium.org
BUG=576998

Review URL: https://codereview.chromium.org/1685473002

Cr-Commit-Position: refs/heads/master@{#375268}

1 files changed, 8 insertions, 0 deletions

diff --git a/components/cronet/url_request_context_config.cc b/components/cronet/url_request_context_config.cc
index 49af1af..329d9a0 100644
--- a/components/cronet/url_request_context_config.cc
+++ b/components/cronet/url_request_context_config.cc
@@ -43,6 +43,7 @@ const char kQuicMigrateSessionsOnNetworkChange[] =
     "migrate_sessions_on_network_change";
 const char kQuicPreferAes[] = "prefer_aes";
 const char kQuicUserAgentId[] = "user_agent_id";
+const char kQuicMigrateSessionsEarly[] = "migrate_sessions_early";
 
 // AsyncDNS experiment dictionary name.
 const char kAsyncDnsFieldTrialName[] = "AsyncDNS";
@@ -160,6 +161,13 @@ void ParseAndSetExperimentalOptions(
     if (quic_args->GetString(kQuicUserAgentId, &quic_user_agent_id)) {
       context_builder->set_quic_user_agent_id(quic_user_agent_id);
     }
+
+    bool quic_migrate_sessions_early = false;
+    if (quic_args->GetBoolean(kQuicMigrateSessionsEarly,
+                              &quic_migrate_sessions_early)) {
+      context_builder->set_quic_migrate_sessions_early(
+          quic_migrate_sessions_early);
+    }
   }
 
   const base::DictionaryValue* async_dns_args = nullptr;