Add SSLInfo into test_server::HttpRequest

Extend the embedded_test_server's HttpRequest struct to additionally
contain the SSLInfo structure when it's available.

This allows to inspect the SSL state, like the provided client
certificate, in net::EmbeddedTestServer's request handlers.

Bug: 792204
Change-Id: Ia24acf0c38fadee04c341d3c9192d98272bf5ad7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2545163Reviewed-by: David Benjamin <davidben@chromium.org>
Commit-Queue: Maksim Ivanov <emaxx@chromium.org>
Cr-Commit-Position: refs/heads/master@{#828465}

net/test/embedded_test_server/embedded_test_server.cc

@@ -639,9 +639,10 @@ void EmbeddedTestServer::HandleRequest(HttpConnection* connection,
   request->base_url = base_url_;
 
   SSLInfo ssl_info;
-  if (connection->socket_->GetSSLInfo(&ssl_info) &&
-      ssl_info.early_data_received) {
-    request->headers["Early-Data"] = "1";
+  if (connection->socket_->GetSSLInfo(&ssl_info)) {
+    request->ssl_info = ssl_info;
+    if (ssl_info.early_data_received)
+      request->headers["Early-Data"] = "1";
   }
 
   for (const auto& monitor : request_monitors_)

net/test/embedded_test_server/http_request.h

@@ -12,8 +12,10 @@
 #include <string>
 
 #include "base/macros.h"
+#include "base/optional.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/string_util.h"
+#include "net/ssl/ssl_info.h"
 #include "url/gurl.h"
 
 namespace net {
@@ -63,6 +65,7 @@ struct HttpRequest {
   HeaderMap headers;
   std::string content;
   bool has_content;
+  base::Optional<SSLInfo> ssl_info;
 };
 
 // Parses the input data and produces a valid HttpRequest object. If there is