[Chromecast] Add net logging.

chromecast/browser/cast_net_log.cc

-// Copyright 2013 The Chromium Authors. All rights reserved.
+// Copyright 2015 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 "content/shell/browser/shell_net_log.h"
+#include "chromecast/browser/cast_net_log.h"
 
 #include <stdio.h>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_file.h"
 #include "base/values.h"
 #include "content/public/common/content_switches.h"
 #include "net/log/net_log_util.h"
 #include "net/log/write_to_file_net_log_observer.h"
 
-namespace content {
+namespace chromecast {
 
 namespace {
 
-base::DictionaryValue* GetShellConstants(const std::string& app_name) {
+base::DictionaryValue* GetShellConstants() {
   scoped_ptr<base::DictionaryValue> constants_dict = net::GetNetConstants();
 
   // Add a dictionary with client information
   base::DictionaryValue* dict = new base::DictionaryValue();
 
-  dict->SetString("name", app_name);
+  dict->SetString("name", "cast_shell");
   dict->SetString(
       "command_line",
       base::CommandLine::ForCurrentProcess()->GetCommandLineString());
 
   constants_dict->Set("clientInfo", dict);
 
   return constants_dict.release();
 }
 
 }  // namespace
 
-ShellNetLog::ShellNetLog(const std::string& app_name) {
-  // TODO(mmenke):  Other than a different set of constants, this code is
-  //     identical to code in ChromeNetLog.  Consider merging the code.
+CastNetLog::CastNetLog() {
+  // TODO(derekjchow): This code is virtually identical to ShellNetLog which is
+  //     nearly identical to code in ChromeNetLog. Consider merging the code.
   const base::CommandLine* command_line =
       base::CommandLine::ForCurrentProcess();
 
   if (command_line->HasSwitch(switches::kLogNetLog)) {
     base::FilePath log_path =
         command_line->GetSwitchValuePath(switches::kLogNetLog);
     // Much like logging.h, bypass threading restrictions by using fopen
     // directly.  Have to write on a thread that's shutdown to handle events on
     // shutdown properly, and posting events to another thread as they occur
     // would result in an unbounded buffer size, so not much can be gained by
     // doing this on another thread.  It's only used when debugging, so
     // performance is not a big concern.
     base::ScopedFILE file;
 #if defined(OS_WIN)

[lcwu1, 2015/06/26 04:30:26]

Cast doesn't care about OS_WIN. :-)

[derekjchow1, 2015/06/26 17:58:53]

Done.

     file.reset(_wfopen(log_path.value().c_str(), L"w"));
 #elif defined(OS_POSIX)
     file.reset(fopen(log_path.value().c_str(), "w"));
 #endif
 
     if (!file) {
       LOG(ERROR) << "Could not open file " << log_path.value()
                  << " for net logging";
     } else {
-      scoped_ptr<base::Value> constants(GetShellConstants(app_name));
+      scoped_ptr<base::Value> constants(GetShellConstants());
       write_to_file_observer_.reset(new net::WriteToFileNetLogObserver());
       write_to_file_observer_->StartObserving(this, file.Pass(),
                                       constants.get(), nullptr);
     }
   }
 }
 
-ShellNetLog::~ShellNetLog() {
+CastNetLog::~CastNetLog() {
   // Remove the observer we own before we're destroyed.
   if (write_to_file_observer_)
     write_to_file_observer_->StopObserving(nullptr);
 }
 
-}  // namespace content
+}  // namespace chromecast