[translate] Add translate ranker model loader.

net/url_request/url_request_context_getter.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/url_request/url_request_context_getter.h"
 
 #include "base/debug/leak_annotations.h"
+#include "base/debug/stack_trace.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter_observer.h"
 
 namespace net {
 
+void URLRequestContextGetter::AddRef() const {
+  base::debug::StackTrace().Print();
+  base::RefCountedThreadSafe<URLRequestContextGetter,
+                             URLRequestContextGetterTraits>::AddRef();
+}
+
+void URLRequestContextGetter::Release() const {
+  base::debug::StackTrace().Print();
+  base::RefCountedThreadSafe<URLRequestContextGetter,
+                             URLRequestContextGetterTraits>::Release();
+}
+
 void URLRequestContextGetter::AddObserver(
     URLRequestContextGetterObserver* observer) {
   DCHECK(GetNetworkTaskRunner()->BelongsToCurrentThread());
   observer_list_.AddObserver(observer);
 }
 
 void URLRequestContextGetter::RemoveObserver(
     URLRequestContextGetterObserver* observer) {
   DCHECK(GetNetworkTaskRunner()->BelongsToCurrentThread());
   observer_list_.RemoveObserver(observer);
 }
 
 URLRequestContextGetter::URLRequestContextGetter() {}
 
-URLRequestContextGetter::~URLRequestContextGetter() {}
+URLRequestContextGetter::~URLRequestContextGetter() {
+  LOG(ERROR) << "I am being deleted now";
+}
 
 void URLRequestContextGetter::OnDestruct() const {
   scoped_refptr<base::SingleThreadTaskRunner> network_task_runner =
       GetNetworkTaskRunner();
   DCHECK(network_task_runner.get());
   if (network_task_runner.get()) {
     if (network_task_runner->BelongsToCurrentThread()) {
       delete this;
     } else {
       if (!network_task_runner->DeleteSoon(FROM_HERE, this)) {
@@ skipping 33 matching lines @@
   return context_;
 }
 
 scoped_refptr<base::SingleThreadTaskRunner>
 TrivialURLRequestContextGetter::GetNetworkTaskRunner() const {
   return main_task_runner_;
 }
 
 
 }  // namespace net