[net] Better StopCaching() handling for HttpCache::Transaction.

net/http/mock_http_cache.cc

 // Copyright (c) 2012 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/mock_http_cache.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/thread_task_runner_handle.h"
@@ skipping 477 matching lines @@
 scoped_ptr<disk_cache::Backend::Iterator> MockDiskCache::CreateIterator() {
   return scoped_ptr<Iterator>(new NotImplementedIterator());
 }
 
 void MockDiskCache::GetStats(base::StringPairs* stats) {
 }
 
 void MockDiskCache::OnExternalCacheHit(const std::string& key) {
 }
 
+void MockDiskCache::ResetCounts() {
+  open_count_ = 0;
+  create_count_ = 0;
+}
+
 void MockDiskCache::ReleaseAll() {
   EntryMap::iterator it = entries_.begin();
   for (; it != entries_.end(); ++it)
     it->second->Release();
   entries_.clear();
 }
 
 void MockDiskCache::CallbackLater(const CompletionCallback& callback,
                                   int result) {
   base::ThreadTaskRunnerHandle::Get()->PostTask(
@@ skipping 153 matching lines @@
   if (!callback_.is_null()) {
     if (!fail_)
       backend_->reset(new MockDiskCache());
     CompletionCallback cb = callback_;
     callback_.Reset();
     cb.Run(Result());  // This object can be deleted here.
   }
 }
 
 }  // namespace net