media: Simplify CdmHostFile(s)

media/base/media_switches.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 "build/build_config.h"
 #include "media/base/media_switches.h"
 #include "ppapi/features/features.h"
 
 namespace switches {
 
@@ skipping 112 matching lines @@
 const char kEnableVp9InMp4[] = "enable-vp9-in-mp4";
 
 // Force media player using SurfaceView instead of SurfaceTexture on Android.
 const char kForceVideoOverlays[] = "force-video-overlays";
 
 // Allows explicitly specifying MSE audio/video buffer sizes.
 // Default values are 150M for video and 12M for audio.
 const char kMSEAudioBufferSizeLimit[] = "mse-audio-buffer-size-limit";
 const char kMSEVideoBufferSizeLimit[] = "mse-video-buffer-size-limit";
 
-// By default, if any CDM host (including signature) file is missing, the CDM
-// will not be called to verify the host. Enable this switch to ignore missing
-// CDM host files. This can be used in tests.
-const char kIgnoreMissingCdmHostFile[] = "ignore-missing-cdm-host-file";
-
 }  // namespace switches
 
 namespace media {
 
 #if defined(OS_WIN)
 // Enables video decode acceleration using the D3D11 video decoder api.
 // This is completely insecure - DO NOT USE except for testing.
 const base::Feature kD3D11VideoDecoding{"D3D11VideoDecoding",
                                         base::FEATURE_DISABLED_BY_DEFAULT};
 
@@ skipping 56 matching lines @@
 
 // An experimental feature to enable persistent-license type support in MediaDrm
 // when using Encrypted Media Extensions (EME) API.
 // TODO(xhwang): Remove this after feature launch. See http://crbug.com/493521
 const base::Feature kMediaDrmPersistentLicense{
     "MediaDrmPersistentLicense", base::FEATURE_DISABLED_BY_DEFAULT};
 
 #endif
 
 }  // namespace media