Enable vp09 codec string in WebM by default

content/renderer/render_thread_impl.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 "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <utility>
@@ skipping 837 matching lines @@
   // been initialized by the Zygote before this instance became a Renderer.
   media::InitializeMediaLibrary();
 
 #if defined(OS_ANDROID)
   if (!command_line.HasSwitch(switches::kDisableAcceleratedVideoDecode) &&
       media::MediaCodecUtil::IsMediaCodecAvailable()) {
     media::EnablePlatformDecoderSupport();
   }
 #endif
 
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(switches::kEnableHDR) ||
-      base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kEnableNewVp9CodecString)) {
-    media::EnableNewVp9CodecStringSupport();
-  }
-
   memory_pressure_listener_.reset(new base::MemoryPressureListener(
       base::Bind(&RenderThreadImpl::OnMemoryPressure, base::Unretained(this)),
       base::Bind(&RenderThreadImpl::OnSyncMemoryPressure,
                  base::Unretained(this))));
 
   if (base::FeatureList::IsEnabled(features::kMemoryCoordinator)) {
     // Disable MemoryPressureListener when memory coordinator is enabled.
     base::MemoryPressureListener::SetNotificationsSuppressed(true);
 
     // TODO(bashi): Revisit how to manage the lifetime of
@@ skipping 1617 matching lines @@
   }
 }
 
 void RenderThreadImpl::OnRendererInterfaceRequest(
     mojom::RendererAssociatedRequest request) {
   DCHECK(!renderer_binding_.is_bound());
   renderer_binding_.Bind(std::move(request));
 }
 
 }  // namespace content