Remove dead code related to media device enumerations and monitoring.

content/common/media/media_stream_options.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 CONTENT_COMMON_MEDIA_MEDIA_STREAM_OPTIONS_H_
 #define CONTENT_COMMON_MEDIA_MEDIA_STREAM_OPTIONS_H_
 
 #include <string>
 #include <vector>
 
 #include "content/common/content_export.h"
 #include "content/public/common/media_stream_request.h"
 
 namespace content {
 
 // Names for media stream source capture types.
 // These are values of the "TrackControls.stream_source" field, and are
 // set via the "chromeMediaSource" constraint.
 CONTENT_EXPORT extern const char kMediaStreamSourceTab[];
 CONTENT_EXPORT extern const char kMediaStreamSourceScreen[];
 CONTENT_EXPORT extern const char kMediaStreamSourceDesktop[];
 CONTENT_EXPORT extern const char kMediaStreamSourceSystem[];
 
 struct CONTENT_EXPORT TrackControls {
  public:
   TrackControls();
-  TrackControls(bool request);
-  TrackControls(const TrackControls& other);
+  explicit TrackControls(bool request);
+  explicit TrackControls(const TrackControls& other);
   ~TrackControls();
   bool requested;
 
   // Source. This is "tab", "screen", "desktop", "system", or blank.
   // Consider replacing with MediaStreamType enum variables.
   std::string stream_source;  // audio.kMediaStreamSource
 
   // Device ID requests.
   // The first set represents required devices - either grab one or fail.
   // The second set represents optional devices - if we can't get one of
@@ skipping 25 matching lines @@
 struct CONTENT_EXPORT StreamDeviceInfo {
   static const int kNoId;
 
   StreamDeviceInfo();
   StreamDeviceInfo(MediaStreamType service_param,
                    const std::string& name_param,
                    const std::string& device_param);
   StreamDeviceInfo(MediaStreamType service_param,
                    const std::string& name_param,
                    const std::string& device_param,
-                   const std::string& group_param);
-  StreamDeviceInfo(MediaStreamType service_param,
-                   const std::string& name_param,
-                   const std::string& device_param,
-                   const std::string& group_param,
                    int sample_rate,
                    int channel_layout,
                    int frames_per_buffer);
   static bool IsEqual(const StreamDeviceInfo& first,
                       const StreamDeviceInfo& second);
 
   MediaStreamDevice device;
 
   // Id for this capture session. Unique for all sessions of the same type.
   int session_id;
 };
 
 typedef std::vector<StreamDeviceInfo> StreamDeviceInfoArray;
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_MEDIA_MEDIA_STREAM_OPTIONS_H_