[ServiceWorkerCache] Put should replace an existing entry to meet spec.

content/browser/service_worker/service_worker_cache.cc

 // Copyright 2014 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 "content/browser/service_worker/service_worker_cache.h"
 
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/guid.h"
@@ skipping 869 matching lines @@
 
 // static
 void ServiceWorkerCache::PutImpl(scoped_ptr<PutContext> put_context) {
   if (!put_context->cache || !put_context->cache->backend_) {
     put_context->callback.Run(ErrorTypeStorage,
                               scoped_ptr<ServiceWorkerResponse>(),
                               scoped_ptr<storage::BlobDataHandle>());
     return;
   }
 
+  scoped_ptr<ServiceWorkerFetchRequest> request_copy(
+      new ServiceWorkerFetchRequest(*put_context->request));
+  ServiceWorkerCache* cache_ptr = put_context->cache.get();
+
+  cache_ptr->Delete(request_copy.Pass(),
+                    base::Bind(PutDidDelete, base::Passed(put_context.Pass())));
+}
+
+// static
+void ServiceWorkerCache::PutDidDelete(scoped_ptr<PutContext> put_context,
+                                      ErrorType delete_error) {
+  if (!put_context->cache || !put_context->cache->backend_) {
+    put_context->callback.Run(ErrorTypeStorage,
+                              scoped_ptr<ServiceWorkerResponse>(),
+                              scoped_ptr<storage::BlobDataHandle>());
+  }
+
   disk_cache::Entry** entry_ptr = &put_context->cache_entry;
   ServiceWorkerFetchRequest* request_ptr = put_context->request.get();
   disk_cache::Backend* backend_ptr = put_context->cache->backend_.get();
 
   net::CompletionCallback create_entry_callback =
       base::Bind(PutDidCreateEntry, base::Passed(put_context.Pass()));
 
   int create_rv = backend_ptr->CreateEntry(
       request_ptr->url.spec(), entry_ptr, create_entry_callback);
 
@@ skipping 284 matching lines @@
   initialized_ = true;
   for (std::vector<base::Closure>::iterator it = init_callbacks_.begin();
        it != init_callbacks_.end();
        ++it) {
     it->Run();
   }
   init_callbacks_.clear();
 }
 
 }  // namespace content