Fixes the cache lock issue.

net/http/http_transaction_test_util.h

Index: net/http/http_transaction_test_util.h
diff --git a/net/http/http_transaction_test_util.h b/net/http/http_transaction_test_util.h
index 718fe2727bcd0c7270c08273cfb5879452212ca0..ca5c4c53cea9ee620368a14e276e6819ab207b02 100644
--- a/net/http/http_transaction_test_util.h
+++ b/net/http/http_transaction_test_util.h
@@ -14,6 +14,7 @@
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
+#include "base/run_loop.h"
 #include "base/strings/string16.h"
 #include "net/base/io_buffer.h"
 #include "net/base/load_flags.h"
@@ -201,6 +202,9 @@ class MockNetworkTransaction
   int Read(IOBuffer* buf,
            int buf_len,
            const CompletionCallback& callback) override;
+
+  void Orphan(std::unique_ptr<HttpTransaction> trans) override;
+
   void PopulateNetErrorDetails(NetErrorDetails* details) const override;
 
   void StopCaching() override;
@@ -347,12 +351,42 @@ class MockNetworkLayer : public HttpTransactionFactory,
   base::WeakPtr<MockNetworkTransaction> last_transaction_;
 };
 
+struct Context {
+  Context();
+
+  int result;
+  TestCompletionCallback callback;
+  std::unique_ptr<HttpTransaction> trans;
+  ~Context();
+};
+
 //-----------------------------------------------------------------------------
 // helpers
 
 // read the transaction completely
 int ReadTransaction(HttpTransaction* trans, std::string* result);
 
+int ReadSharedWritersCacheRead(std::vector<Context*>& context_list,
+                               std::vector<std::string>& results);
+
+int ReadSharedWritersJoinedRead(std::vector<Context*>& context_list,
+                                std::vector<std::string>& results);
+
+int ReadSharedWritersJoinedReadDoneReading(std::vector<Context*>& context_list,
+                                           std::vector<std::string>& results);
+
+int ReadSharedWritersJoinedReadDoomCurrentWriter(
+    std::vector<Context*>& context_list,
+    std::vector<std::string>& results);
+
+int ReadSharedWritersJoinedReadDeleteWaitingWriter(
+    std::vector<Context*>& context_list,
+    std::vector<std::string>& results);
+
+int ReadSharedWritersJoinedReadDeleteIdleWriter(
+    std::vector<Context*>& context_list,
+    std::vector<std::string>& results);
+
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_TRANSACTION_UNITTEST_H_