[Cast for ATV] Enable UMP on Cast for ATV

chromecast/browser/cast_browser_main_parts.cc

 // Copyright 2014 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 "chromecast/browser/cast_browser_main_parts.h"
 
 #include <stddef.h>
 #include <string.h>
 
 #include <string>
@@ skipping 176 matching lines @@
 struct DefaultCommandLineSwitch {
   const char* const switch_name;
   const char* const switch_value;
 };
 
 DefaultCommandLineSwitch g_default_switches[] = {
 #if defined(OS_ANDROID)
   // Disables Chromecast-specific WiFi-related features on ATV for now.
   { switches::kNoWifi, "" },
   { switches::kDisableGestureRequirementForMediaPlayback, ""},
-  // TODO(sanfin): Unified Media Pipeline is disabled on ATV because of extant
-  // issues with DRM and v8 that block media playback for numerous apps.
-  // Reenable when the Unified Media Pipeline is stable enough for testing.
-  { switches::kDisableUnifiedMediaPipeline, ""},
   { switches::kDisableMediaSuspend, ""},
 #else
   // GPU shader disk cache disabling is largely to conserve disk space.
   { switches::kDisableGpuShaderDiskCache, "" },
 #endif
   // Always enable HTMLMediaElement logs.
   { switches::kBlinkPlatformLogChannels, "Media"},
 #if BUILDFLAG(DISABLE_DISPLAY)
   { switches::kDisableGpu, "" },
 #endif
@@ skipping 299 matching lines @@
 
 void CastBrowserMainParts::PostDestroyThreads() {
 #if !defined(OS_ANDROID)
   media_resource_tracker_->FinalizeAndDestroy();
   media_resource_tracker_ = nullptr;
 #endif
 }
 
 }  // namespace shell
 }  // namespace chromecast