Enable exporting SSLKEYLOGFILE on Android w/ command line arguments

chrome/browser/io_thread.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 CHROME_BROWSER_IO_THREAD_H_
 #define CHROME_BROWSER_IO_THREAD_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 248 matching lines @@
  private:
   // Map from name to value for all parameters associate with a field trial.
   typedef std::map<std::string, std::string> VariationParameters;
 
   // Provide SystemURLRequestContextGetter with access to
   // InitSystemRequestContext().
   friend class SystemURLRequestContextGetter;
 
   friend class test::IOThreadPeer;
 
+  // Gets file path into ssl_keylog_file from command line argument or
+  // environment variable. Command line argument has priority when
+  // both specified.
+  void GetSSLKeyLogFile(const base::CommandLine& command_line,

[Bryan McQuade, 2015/10/15 19:11:13]

this should return std::string rather than using an out parameter. see
https://google-styleguide.googlecode.com/svn/trunk/cppguide.html#Reference_Ar...
for more info.

[Zhongyi Shi, 2015/10/15 19:47:57]

Done.

+                        std::string& ssl_keylog_file);
+
   // BrowserThreadDelegate implementation, runs on the IO thread.
   // This handles initialization and destruction of state that must
   // live on the IO thread.
   void Init() override;
   void CleanUp() override;
 
   // Initializes |params| based on the settings in |globals|.
   static void InitializeNetworkSessionParamsFromGlobals(
       const Globals& globals,
       net::HttpNetworkSession::Params* params);
@@ skipping 235 matching lines @@
   bool is_quic_allowed_by_policy_;
 
   const base::TimeTicks creation_time_;
 
   base::WeakPtrFactory<IOThread> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(IOThread);
 };
 
 #endif  // CHROME_BROWSER_IO_THREAD_H_