* Avoid doing concurrent DNS resolves of the same hostname in HostResolver.

* Add a 1 minute cache for host resolves.

* Refactor HostResolver to handle multiple requests.

* Make HostResolver a dependency of URLRequestContext. operate the HostResolver
in async mode for proxy resolver (bridging to IO thread).

TEST=unittests
BUG=13163

Review URL: http://codereview.chromium.org/118100

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@18236 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 6 insertions, 1 deletions

diff --git a/net/ftp/ftp_network_session.h b/net/ftp/ftp_network_session.h
index 13ab216..29c34d2 100644
--- a/net/ftp/ftp_network_session.h
+++ b/net/ftp/ftp_network_session.h
@@ -10,14 +10,19 @@
 
 namespace net {
 
+class HostResolver;
+
 // This class holds session objects used by FtpNetworkTransaction objects.
 class FtpNetworkSession : public base::RefCounted<FtpNetworkSession> {
  public:
-  FtpNetworkSession() {}
+  explicit FtpNetworkSession(HostResolver* host_resolver)
+      : host_resolver_(host_resolver) {}
 
+  HostResolver* host_resolver() { return host_resolver_; }
   FtpAuthCache* auth_cache() { return &auth_cache_; }
 
  private:
+  HostResolver* host_resolver_;
   FtpAuthCache auth_cache_;
 };