[ServiceWorker] Propagates ServiceWorker fetched response's URL and wasFetchedViaServiceWorker flag.

net/http/http_response_info.cc

Index: net/http/http_response_info.cc
diff --git a/net/http/http_response_info.cc b/net/http/http_response_info.cc
index be6fa4f8a1fa67ffabee94d2978c024565b9b03b..7980dc17a54b55e7a86dae09fe4fb773f2677162 100644
--- a/net/http/http_response_info.cc
+++ b/net/http/http_response_info.cc
@@ -91,6 +91,9 @@ enum {
   // This bit is set if ssl_info has SCTs.
   RESPONSE_INFO_HAS_SIGNED_CERTIFICATE_TIMESTAMPS = 1 << 20,
 
+  // This bit is set if the response was received via a ServiceWorker .
+  RESPONSE_INFO_WAS_SERVICE_WORKER = 1 << 21,
+
   // TODO(darin): Add other bits to indicate alternate request methods.
   // For now, we don't support storing those.
 };
@@ -103,6 +106,7 @@ HttpResponseInfo::HttpResponseInfo()
       was_npn_negotiated(false),
       was_fetched_via_proxy(false),
       did_use_http_auth(false),
+      was_fetched_via_service_worker(false),
       connection_info(CONNECTION_INFO_UNKNOWN) {
 }
 
@@ -115,6 +119,8 @@ HttpResponseInfo::HttpResponseInfo(const HttpResponseInfo& rhs)
       was_fetched_via_proxy(rhs.was_fetched_via_proxy),
       proxy_server(rhs.proxy_server),
       did_use_http_auth(rhs.did_use_http_auth),
+      was_fetched_via_service_worker(rhs.was_fetched_via_service_worker),
+      original_url_via_service_worker(rhs.original_url_via_service_worker),
       socket_address(rhs.socket_address),
       npn_negotiated_protocol(rhs.npn_negotiated_protocol),
       connection_info(rhs.connection_info),
@@ -140,6 +146,8 @@ HttpResponseInfo& HttpResponseInfo::operator=(const HttpResponseInfo& rhs) {
   was_npn_negotiated = rhs.was_npn_negotiated;
   was_fetched_via_proxy = rhs.was_fetched_via_proxy;
   did_use_http_auth = rhs.did_use_http_auth;
+  was_fetched_via_service_worker = rhs.was_fetched_via_service_worker;
+  original_url_via_service_worker = rhs.original_url_via_service_worker;
   socket_address = rhs.socket_address;
   npn_negotiated_protocol = rhs.npn_negotiated_protocol;
   connection_info = rhs.connection_info;
@@ -267,6 +275,14 @@ bool HttpResponseInfo::InitFromPickle(const Pickle& pickle,
     }
   }
 
+  // Read ServiceWorker info.
+  if (flags & RESPONSE_INFO_WAS_SERVICE_WORKER) {
+    std::string original_url;
+    if (!pickle.ReadString(&iter, &original_url))
+      return false;
+    original_url_via_service_worker = GURL(original_url);
+  }
+
   was_fetched_via_spdy = (flags & RESPONSE_INFO_WAS_SPDY) != 0;
 
   was_npn_negotiated = (flags & RESPONSE_INFO_WAS_NPN) != 0;
@@ -277,6 +293,9 @@ bool HttpResponseInfo::InitFromPickle(const Pickle& pickle,
 
   did_use_http_auth = (flags & RESPONSE_INFO_USE_HTTP_AUTHENTICATION) != 0;
 
+  was_fetched_via_service_worker =
+      (flags & RESPONSE_INFO_WAS_SERVICE_WORKER) != 0;
+
   return true;
 }
 
@@ -310,6 +329,8 @@ void HttpResponseInfo::Persist(Pickle* pickle,
     flags |= RESPONSE_INFO_USE_HTTP_AUTHENTICATION;
   if (!ssl_info.signed_certificate_timestamps.empty())
     flags |= RESPONSE_INFO_HAS_SIGNED_CERTIFICATE_TIMESTAMPS;
+  if (was_fetched_via_service_worker)
+    flags |= RESPONSE_INFO_WAS_SERVICE_WORKER;
 
   pickle->WriteInt(flags);
   pickle->WriteInt64(request_time.ToInternalValue());
@@ -359,6 +380,9 @@ void HttpResponseInfo::Persist(Pickle* pickle,
 
   if (connection_info != CONNECTION_INFO_UNKNOWN)
     pickle->WriteInt(static_cast<int>(connection_info));
+
+  if (was_fetched_via_service_worker)
+    pickle->WriteString(original_url_via_service_worker.spec());
 }
 
 HttpResponseInfo::ConnectionInfo HttpResponseInfo::ConnectionInfoFromNextProto(