First cut at UI for saving net_internals data into a file for mobile (Android and Ios).

chrome/browser/net/net_log_logger.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_NET_NET_LOG_LOGGER_H_
 #define CHROME_BROWSER_NET_NET_LOG_LOGGER_H_
 
+#include <string>
+#include <vector>
+
+#include "base/file_path.h"
 #include "base/memory/scoped_handle.h"
+#include "base/memory/scoped_ptr.h"
 #include "net/base/net_log.h"
 
 class FilePath;
 
 // NetLogLogger watches the NetLog event stream, and sends all entries to
 // VLOG(1) or a path specified on creation.  This is to debug errors that
 // prevent getting to the about:net-internals page.
 //
 // When writing directly to a file rather than VLOG(1), the text file will
 // contain a single JSON object, with an extra comma on the end and missing
 // a terminal "]}".
 //
 // Relies on ChromeNetLog only calling an Observer once at a time for
 // thread-safety.
 class NetLogLogger : public net::NetLog::ThreadSafeObserver {
  public:
   // If |log_path| is empty or file creation fails, writes to VLOG(1).
   // Otherwise, writes to |log_path|.  Uses one line per entry, for
   // easy parsing.
   explicit NetLogLogger(const FilePath &log_path);
   virtual ~NetLogLogger();
 
   // Starts observing specified NetLog.  Must not already be watching a NetLog.
   // Separate from constructor to enforce thread safety.
   void StartObserving(net::NetLog* net_log);
 
   // net::NetLog::ThreadSafeObserver implementation:
   virtual void OnAddEntry(const net::NetLog::Entry& entry) OVERRIDE;
 
+  // Start collecting NetLog data into a temporary file.
+  static void StartNetLog();

[qsr, 2012/12/10 10:51:07]

Did you see with any of the Owners if that is fine with them... I don't really
see why you are doing this. Can you use a  NetLogLogger as it is with a given
file path where you need it, instead of having all those static methods?

+
+  // Stop collecting NetLog data into a temporary file.
+  static void StopNetLog();
+
+  // Send NetLog data that is in the temporary file.
+  static void SendNetLog();
+
  private:
+  // Open the file specified by |log_path_|.
+  void OpenFile();
+
+  // Send NetLog via email.
+  static void SendEmail(const FilePath::StringType& file_to_attch);

[qsr, 2012/12/10 10:51:07]

1. attach
2. Why isn't this a const FilePath& ?

+
   ScopedStdioHandle file_;
+  FilePath log_path_;
+  std::vector<FilePath::StringType> files_to_delete_;

[qsr, 2012/12/10 10:51:07]

Same thing here, why isn't those FilePath?

 
   DISALLOW_COPY_AND_ASSIGN(NetLogLogger);
 };
 
 #endif  // CHROME_BROWSER_NET_NET_LOG_LOGGER_H_