Inform disk cache of WebKit memory cache hits.

net/http/http_cache.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/http/http_cache.h"
 
 #include <algorithm>
 
 #include "base/compiler_specific.h"
 
@@ skipping 445 matching lines @@
 }
 
 void HttpCache::CloseAllConnections() {
   net::HttpNetworkLayer* network =
       static_cast<net::HttpNetworkLayer*>(network_layer_.get());
   HttpNetworkSession* session = network->GetSession();
   if (session)
     session->CloseAllConnections();
 }
 
+void HttpCache::OnExternalCacheHit(const GURL& url,
+                                   const std::string& http_method) {
+  if (!disk_cache_.get())
+    return;
+
+  HttpRequestInfo request_info;
+  request_info.url = url;
+  request_info.method = http_method;
+  std::string key = GenerateCacheKey(&request_info);
+  disk_cache_->OnExternalCacheHit(key);
+}
+
 int HttpCache::CreateTransaction(scoped_ptr<HttpTransaction>* trans) {
   // Do lazy initialization of disk cache if needed.
   if (!disk_cache_.get())
     CreateBackend(NULL, NULL);  // We don't care about the result.
 
   trans->reset(new HttpCache::Transaction(this));
   return OK;
 }
 
 HttpCache* HttpCache::GetCache() {
@@ skipping 657 matching lines @@
     building_backend_ = false;
     DeletePendingOp(pending_op);
   }
 
   // The cache may be gone when we return from the callback.
   if (!item->DoCallback(result, backend))
     item->NotifyTransaction(result, NULL);
 }
 
 }  // namespace net