Clean up histogram'd media enum max values.

media/audio/pulse/pulse_util.cc

 // 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.
 
 #include "media/audio/pulse/pulse_util.h"
 
 #include "base/logging.h"
 #include "base/time/time.h"
 #include "media/audio/audio_manager_base.h"
 #include "media/audio/audio_parameters.h"
@@ skipping 23 matching lines @@
     case LEFT_OF_CENTER:
       return PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER;
     case RIGHT_OF_CENTER:
       return PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER;
     case BACK_CENTER:
       return PA_CHANNEL_POSITION_REAR_CENTER;
     case SIDE_LEFT:
       return PA_CHANNEL_POSITION_SIDE_LEFT;
     case SIDE_RIGHT:
       return PA_CHANNEL_POSITION_SIDE_RIGHT;
-    case CHANNELS_MAX:
-      return PA_CHANNEL_POSITION_INVALID;
     default:
       NOTREACHED() << "Invalid channel: " << channel;
       return PA_CHANNEL_POSITION_INVALID;
   }
 }
 
 }  // namespace
 
 // static, pa_stream_success_cb_t
 void StreamSuccessCallback(pa_stream* s, int error, void* mainloop) {
@@ skipping 250 matching lines @@
   }
 
   return true;
 }
 
 #undef RETURN_ON_FAILURE
 
 }  // namespace pulse
 
 }  // namespace media