RemoveSurfaceTextureAndProxy is not used.

content/renderer/media/android/webmediaplayer_android.cc

 // Copyright 2013 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 "content/renderer/media/android/webmediaplayer_android.h"
 
 #include <stddef.h>
 
 #include <limits>
 
@@ skipping 1085 matching lines @@
     base::AutoLock auto_lock(current_frame_lock_);
     video_frame = current_frame_;
   }
 
   return video_frame;
 }
 
 void WebMediaPlayerAndroid::PutCurrentFrame() {
 }
 
-void WebMediaPlayerAndroid::RemoveSurfaceTextureAndProxy() {
-  DCHECK(main_thread_checker_.CalledOnValidThread());
-
-  if (texture_id_) {
-    GLES2Interface* gl = stream_texture_factory_->ContextGL();
-    gl->DeleteTextures(1, &texture_id_);
-    // Flush to ensure that the stream texture gets deleted in a timely fashion.
-    gl->ShallowFlushCHROMIUM();
-    texture_id_ = 0;
-    texture_mailbox_ = gpu::Mailbox();
-  }
-  stream_texture_proxy_.reset();
-  needs_establish_peer_ =
-      !is_remote_ && !is_fullscreen_ && (hasVideo() || IsHLSStream());
-}
-
 void WebMediaPlayerAndroid::UpdateStreamTextureProxyCallback(
     cc::VideoFrameProvider::Client* client) {
   base::Closure frame_received_cb;
 
   if (client) {
     // Unretained is safe here because:
     // - |client| is valid until we receive a call to
     // SetVideoFrameProviderClient(nullptr).
     // - SetVideoFrameProviderClient(nullptr) clears proxy's callback
     // guaranteeing it will no longer be run.
@@ skipping 190 matching lines @@
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kDisableMediaSuspend)) {
     return false;
   }
 
   return base::FeatureList::IsEnabled(media::kResumeBackgroundVideo) &&
       hasAudio() && !isRemote() && delegate_ && delegate_->IsHidden();
 }
 
 }  // namespace content