Move DevToolsNetLogObserver to c/b/loader and create stub of network service interface

content/browser/loader/netlog_observer.h

 // 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.
 
-#ifndef CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_NETLOG_OBSERVER_H_
-#define CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_NETLOG_OBSERVER_H_
+#ifndef CONTENT_BROWSER_LOADER_NETLOG_OBSERVER_H_
+#define CONTENT_BROWSER_LOADER_NETLOG_OBSERVER_H_
 
 #include <stdint.h>
 
 #include "base/containers/hash_tables.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "content/public/common/resource_devtools_info.h"
 #include "net/log/net_log.h"
 
 namespace net {
 class URLRequest;
 }  // namespace net
 
 namespace content {
 struct ResourceResponse;
 
-// DevToolsNetLogObserver watches the NetLog event stream and collects the
-// stuff that may be of interest to DevTools. Currently, this only includes
-// actual HTTP/SPDY headers sent and received over the network.
+// NetLogObserver watches the NetLog event stream and collects the stuff that
+// may be of interest to the client. Currently, this only includes actual
+// HTTP/SPDY headers sent and received over the network.
 //
-// As DevToolsNetLogObserver shares live data with objects that live on the
-// IO Thread, it must also reside on the IO Thread.  Only OnAddEntry can be
-// called from other threads.
-class DevToolsNetLogObserver : public net::NetLog::ThreadSafeObserver {
+// As NetLogObserver shares live data with objects that live on the IO Thread,
+// it must also reside on the IO Thread.  Only OnAddEntry can be called from
+// other threads.
+class NetLogObserver : public net::NetLog::ThreadSafeObserver {
   typedef ResourceDevToolsInfo ResourceInfo;
 
  public:
   // net::NetLog::ThreadSafeObserver implementation:
   void OnAddEntry(const net::NetLog::Entry& entry) override;
 
   void OnAddURLRequestEntry(const net::NetLog::Entry& entry);
 
   static void Attach();
   static void Detach();
 
   // Must be called on the IO thread. May return NULL if no observers
   // are active.
-  static DevToolsNetLogObserver* GetInstance();
-  static void PopulateResponseInfo(net::URLRequest*,
-                                   ResourceResponse*);
+  static NetLogObserver* GetInstance();
+  static void PopulateResponseInfo(net::URLRequest*, ResourceResponse*);
 
  private:
-  static DevToolsNetLogObserver* instance_;
+  static NetLogObserver* instance_;
 
-  DevToolsNetLogObserver();
-  ~DevToolsNetLogObserver() override;
+  NetLogObserver();
+  ~NetLogObserver() override;
 
   ResourceInfo* GetResourceInfo(uint32_t id);
 
   typedef base::hash_map<uint32_t, scoped_refptr<ResourceInfo>>
       RequestToInfoMap;
   RequestToInfoMap request_to_info_;
 
-  DISALLOW_COPY_AND_ASSIGN(DevToolsNetLogObserver);
+  DISALLOW_COPY_AND_ASSIGN(NetLogObserver);
 };
 
 }  // namespace content
 
-#endif  // CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_NETLOG_OBSERVER_H_
+#endif  // CONTENT_BROWSER_LOADER_NETLOG_OBSERVER_H_