[Media] Plumb a feature parameter for the background video keyframe distance.

content/renderer/render_frame_impl.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/render_frame_impl.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 2822 matching lines @@
   media::WebMediaPlayerParams params(
       base::Bind(&ContentRendererClient::DeferMediaLoad,
                  base::Unretained(GetContentClient()->renderer()),
                  static_cast<RenderFrame*>(this),
                  GetWebMediaPlayerDelegate()->has_played_media()),
       audio_renderer_sink, media_log, render_thread->GetMediaThreadTaskRunner(),
       render_thread->GetWorkerTaskRunner(),
       render_thread->compositor_task_runner(), context_3d_cb,
       base::Bind(&v8::Isolate::AdjustAmountOfExternalAllocatedMemory,
                  base::Unretained(blink::mainThreadIsolate())),
-      initial_cdm, media_surface_manager_, media_observer);
+      initial_cdm, media_surface_manager_, media_observer,
+      // TODO(avayvod, asvitkine): Query the value directly when it is available
+      // in the renderer process. See https://crbug.com/681160.
+      GetWebkitPreferences().max_keyframe_distance_to_disable_background_video);
 
   bool use_fallback_path = false;
 #if defined(OS_ANDROID)
   use_fallback_path = !UseWebMediaPlayerImpl(url);
 
   if (use_fallback_path &&
       !base::FeatureList::IsEnabled(media::kAndroidMediaPlayerRenderer)) {
     return CreateAndroidWebMediaPlayer(client, encrypted_client, params);
   }
 #endif  // defined(OS_ANDROID)
@@ skipping 4012 matching lines @@
   // event target. Potentially a Pepper plugin will receive the event.
   // In order to tell whether a plugin gets the last mouse event and which it
   // is, we set |pepper_last_mouse_event_target_| to null here. If a plugin gets
   // the event, it will notify us via DidReceiveMouseEvent() and set itself as
   // |pepper_last_mouse_event_target_|.
   pepper_last_mouse_event_target_ = nullptr;
 #endif
 }
 
 }  // namespace content