Adding DiskBasedCertCache to HttpCache (+UMA).

net/http/http_cache.h

Index: net/http/http_cache.h
diff --git a/net/http/http_cache.h b/net/http/http_cache.h
index 752b98a6715b0f9c66030d4a9e143fb90d9b522e..5bdda8a1f9c89a1d18f71c920183c8bd69c4c188 100644
--- a/net/http/http_cache.h
+++ b/net/http/http_cache.h
@@ -44,6 +44,7 @@ class Entry;
 namespace net {
 
 class CertVerifier;
+class DiskBasedCertCache;
 class HostResolver;
 class HttpAuthHandlerFactory;
 class HttpNetworkSession;
@@ -142,6 +143,8 @@ class NET_EXPORT HttpCache : public HttpTransactionFactory,
 
   HttpTransactionFactory* network_layer() { return network_layer_.get(); }
 
+  DiskBasedCertCache* cert_cache() const { return cert_cache_.get(); }
+
   // Retrieves the cache backend for this HttpCache instance. If the backend
   // is not initialized yet, this method will initialize it. The return value is
   // a network error code, and it could be ERR_IO_PENDING, in which case the
@@ -405,6 +408,8 @@ class NET_EXPORT HttpCache : public HttpTransactionFactory,
 
   scoped_ptr<disk_cache::Backend> disk_cache_;
 
+  scoped_ptr<DiskBasedCertCache> cert_cache_;
+
   // The set of active entries indexed by cache key.
   ActiveEntriesMap active_entries_;