Remove default disable background video suspend.

Revert of https://chromium-review.googlesource.com/c/chromium/src/+/2145870

Bug: internal 154522981
Test: build cast

Change-Id: I4821a920f40e468e28e556985108412199ea0fbd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2218670Reviewed-by: Yuchen Liu <yucliu@chromium.org>
Commit-Queue: Sandeep Vijayasekar <sandv@google.com>
Auto-Submit: Sandeep Vijayasekar <sandv@google.com>
Cr-Commit-Position: refs/heads/master@{#772365}

components/media_control/renderer/media_playback_options.cc

@@ -33,7 +33,6 @@ MediaPlaybackOptions::MediaPlaybackOptions(content::RenderFrame* render_frame)
   // Override default content MediaPlaybackOptions
   renderer_media_playback_options_
       .is_background_video_track_optimization_supported = false;
-  renderer_media_playback_options_.is_background_suspend_enabled = false;
   render_frame->SetRenderFrameMediaPlaybackOptions(
       renderer_media_playback_options_);