Fix some issues found looking at the code....

base/event_recorder.h

 // Copyright (c) 2006-2008 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 BASE_EVENT_RECORDER_H_
 #define BASE_EVENT_RECORDER_H_
 
 #include <string>
 #include <windows.h>
 #include "base/basictypes.h"
@@ skipping 19 matching lines @@
   // We can only handle one recorder/player at a time.
   static EventRecorder* current() {
     if (!current_)
       current_ = new EventRecorder();
     return current_;
   }
 
   // Starts recording events.
   // Will clobber the file if it already exists.
   // Returns true on success, or false if an error occurred.
-  bool StartRecording(std::wstring &filename);
+  bool StartRecording(const std::wstring& filename);
 
   // Stops recording.
   void StopRecording();
 
   // Is the EventRecorder currently recording.
   bool is_recording() const { return is_recording_; }
 
   // Plays events previously recorded.
   // Returns true on success, or false if an error occurred.
-  bool StartPlayback(std::wstring &filename);
+  bool StartPlayback(const std::wstring& filename);
 
   // Stops playback.
   void StopPlayback();
 
   // Is the EventRecorder currently playing.
   bool is_playing() const { return is_playing_; }
 
   // C-style callbacks for the EventRecorder.
   // Used for internal purposes only.
   LRESULT RecordWndProc(int nCode, WPARAM wParam, LPARAM lParam);
   LRESULT PlaybackWndProc(int nCode, WPARAM wParam, LPARAM lParam);
 
  private:
   // Create a new EventRecorder.  Events are saved to the file filename.
   // If the file already exists, it will be deleted before recording
   // starts.
   explicit EventRecorder()
       : is_recording_(false),
         is_playing_(false),
         journal_hook_(NULL),
-        file_(NULL) {
+        file_(NULL),
+        playback_first_msg_time_(0),
+        playback_start_time_(0) {
   }
   ~EventRecorder();
 
   static EventRecorder* current_;  // Our singleton.
 
   bool is_recording_;
   bool is_playing_;
   HHOOK journal_hook_;
   FILE* file_;
   EVENTMSG playback_msg_;
   int playback_first_msg_time_;
   int playback_start_time_;
 
   DISALLOW_EVIL_CONSTRUCTORS(EventRecorder);
 };
 
 }  // namespace base
 
 #endif // BASE_EVENT_RECORDER_H_
-