Introduce url::Origin to represent Web Origin.

content/child/websocket_bridge.cc

Index: content/child/websocket_bridge.cc
diff --git a/content/child/websocket_bridge.cc b/content/child/websocket_bridge.cc
index e61ba8743502058c189c907ba4f48ffeef70bdc7..d7a5f644be525210cf775b7711d6e91191f92138 100644
--- a/content/child/websocket_bridge.cc
+++ b/content/child/websocket_bridge.cc
@@ -214,11 +214,11 @@ void WebSocketBridge::connect(
   std::vector<std::string> protocols_to_pass;
   for (size_t i = 0; i < protocols.size(); ++i)
     protocols_to_pass.push_back(protocols[i].utf8());
-  GURL origin_to_pass(origin.utf8());
+  SerializedOrigin origin_to_pass(origin);
 
-  DVLOG(1) << "Bridge#" << channel_id_ << " Connect("
-           << url << ", (" << JoinString(protocols_to_pass, ", ") << "), "
-           << origin_to_pass << ")";
+  DVLOG(1) << "Bridge#" << channel_id_ << " Connect(" << url << ", ("
+           << JoinString(protocols_to_pass, ", ") << "), "
+           << origin_to_pass.string << ")";
 
   ChildThread::current()->Send(
       new WebSocketHostMsg_AddChannelRequest(channel_id_,