Remove the use-new-media-cache feature.

The switch appears to be unused.

Bug: 1126640
Change-Id: I07728ca316e91051c349615b49304e27c3e81ff4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2427074Reviewed-by: Fredrik Hubinette <hubbe@chromium.org>
Reviewed-by: Becca Hughes <beccahughes@chromium.org>
Reviewed-by: Jesse Doherty <jwd@chromium.org>
Commit-Queue: Caitlin Fischer <caitlinfischer@google.com>
Cr-Commit-Position: refs/heads/master@{#811222}

media/base/media_switches.cc

@@ -411,10 +411,6 @@ const base::Feature kSpecCompliantCanPlayThrough{
 const base::Feature kSuspendMutedAudio{"SuspendMutedAudio",
                                        base::FEATURE_ENABLED_BY_DEFAULT};
 
-// Use shared block-based buffering for media.
-const base::Feature kUseNewMediaCache{"use-new-media-cache",
-                                      base::FEATURE_ENABLED_BY_DEFAULT};
-
 // Enables using the media history store to store media engagement metrics.
 const base::Feature kUseMediaHistoryStore{"UseMediaHistoryStore",
                                           base::FEATURE_ENABLED_BY_DEFAULT};

media/base/media_switches.h

@@ -175,7 +175,6 @@ MEDIA_EXPORT extern const base::Feature kUnifiedAutoplay;
 MEDIA_EXPORT extern const base::Feature kUseAndroidOverlayAggressively;
 MEDIA_EXPORT extern const base::Feature kUseFakeDeviceForMediaStream;
 MEDIA_EXPORT extern const base::Feature kUseMediaHistoryStore;
-MEDIA_EXPORT extern const base::Feature kUseNewMediaCache;
 MEDIA_EXPORT extern const base::Feature kUseR16Texture;
 MEDIA_EXPORT extern const base::Feature kUseSodaForLiveCaption;
 MEDIA_EXPORT extern const base::Feature kVaapiLowPowerEncoderGen9x;

testing/variations/fieldtrial_testing_config.json

@@ -8064,25 +8064,5 @@
                 }
             ]
         }
-    ],
-    "use-new-media-cache": [
-        {
-            "platforms": [
-                "android",
-                "android_weblayer",
-                "chromeos",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "use-new-media-cache"
-                    ]
-                }
-            ]
-        }
     ]
 }