An implementation of chrome.socket.secure().

chrome/browser/extensions/api/socket/socket.h

Index: chrome/browser/extensions/api/socket/socket.h
diff --git a/chrome/browser/extensions/api/socket/socket.h b/chrome/browser/extensions/api/socket/socket.h
index 2e73cb0d1fee27a496af8b9d77ca2f0a4391b8e5..5b230fbff7102095e4d8249d2b312239b7d3d674 100644
--- a/chrome/browser/extensions/api/socket/socket.h
+++ b/chrome/browser/extensions/api/socket/socket.h
@@ -42,9 +42,22 @@ class Socket : public ApiResource {
   enum SocketType {
     TYPE_TCP,
     TYPE_UDP,
+    TYPE_TLS
   };
 
   virtual ~Socket();
+
+  const std::string& hostname() const {
+    return hostname_;
+  }
+
+  void set_hostname(const std::string& hostname) {
+    hostname_ = hostname;
+  }
+
+  // |address| is a resolved IP address. Call set_hostname() to save the
+  // original DNS name of the host if this socket may later get upgraded to
+  // TLS (see TLSSocket::UpgradeSocketToTLS()).
   virtual void Connect(const std::string& address,
                        int port,
                        const CompletionCallback& callback) = 0;
@@ -102,7 +115,9 @@ class Socket : public ApiResource {
                         const net::CompletionCallback& callback) = 0;
   virtual void OnWriteComplete(int result);
 
-  const std::string address_;
+  // The DNS name of the host that this socket is connected to, used when
+  // verifying a TLS certificate.
+  std::string hostname_;
   bool is_connected_;
 
  private: