Fixes the cache lock issue.

chrome/browser/devtools/devtools_network_transaction.h

Index: chrome/browser/devtools/devtools_network_transaction.h
diff --git a/chrome/browser/devtools/devtools_network_transaction.h b/chrome/browser/devtools/devtools_network_transaction.h
index cb13c423c039e555d200025e851421208900fe7d..fd3da3a5a98cf0b422702d182b8ab903a42408a0 100644
--- a/chrome/browser/devtools/devtools_network_transaction.h
+++ b/chrome/browser/devtools/devtools_network_transaction.h
@@ -57,6 +57,7 @@ class DevToolsNetworkTransaction
   int Start(const net::HttpRequestInfo* request,
             const net::CompletionCallback& callback,
             const net::NetLogWithSource& net_log) override;
+  void Orphan(std::unique_ptr<HttpTransaction> trans) override;

[jkarlin, 2016/12/06 18:08:17]

Avoid abbreviating variable names, prefer http_transaction.
http_cache_transaction uses 'trans' in places, but that should get cleaned up
one day.

[shivanisha, 2016/12/06 21:53:34]

Done in all the new code.

   int RestartIgnoringLastError(
       const net::CompletionCallback& callback) override;
   int RestartWithCertificate(net::X509Certificate* client_cert,