Add missing (and remove superfluous) 'explicit' from constructors.

base/event_recorder.h

 // Copyright (c) 2011 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 "base/base_export.h"
 #include "base/basictypes.h"
 #include "build/build_config.h"
@@ skipping 56 matching lines @@
   // 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);
 #endif
 
  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()
+  EventRecorder()
       : is_recording_(false),
         is_playing_(false),
 #if defined(OS_WIN)
         journal_hook_(NULL),
         file_(NULL),
 #endif
         playback_first_msg_time_(0),
         playback_start_time_(0) {
 #if defined(OS_WIN)
     memset(&playback_msg_, 0, sizeof(playback_msg_));
@@ skipping 12 matching lines @@
 #endif
   int playback_first_msg_time_;
   int playback_start_time_;
 
   DISALLOW_COPY_AND_ASSIGN(EventRecorder);
 };
 
 }  // namespace base
 
 #endif // BASE_EVENT_RECORDER_H_