Don't show media controls when there is a persistent video.

third_party/WebKit/Source/core/html/HTMLMediaElement.cpp

 /*
  * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights
  * reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 116 matching lines @@
 
 constexpr float kMostlyFillViewportThreshold = 0.85f;
 constexpr double kMostlyFillViewportBecomeStableSeconds = 5;
 constexpr double kCheckViewportIntersectionIntervalSeconds = 1;
 
 enum MediaControlsShow {
   MediaControlsShowAttribute = 0,
   MediaControlsShowFullscreen,
   MediaControlsShowNoScript,
   MediaControlsShowNotShown,
+  MediaControlsShowDisabledSettings,
   MediaControlsShowMax
 };
 
 String urlForLoggingMedia(const KURL& url) {
   static const unsigned maximumURLLengthForLogging = 128;
 
   if (url.getString().length() < maximumURLLengthForLogging)
     return url.getString();
   return url.getString().substring(0, maximumURLLengthForLogging) + "...";
 }
@@ skipping 203 matching lines @@
     return false;
 
   return url.getString().contains("m3u8");
 }
 
 bool HTMLMediaElement::mediaTracksEnabledInternally() {
   return RuntimeEnabledFeatures::audioVideoTracksEnabled() ||
          RuntimeEnabledFeatures::backgroundVideoTrackOptimizationEnabled();
 }
 
+void HTMLMediaElement::onMediaControlsEnabledChange(Document* document) {
+  auto it = documentToElementSetMap().find(document);
+  if (it == documentToElementSetMap().end())
+    return;
+  DCHECK(it->value);
+  WeakMediaElementSet& elements = *it->value;
+  for (const auto& element : elements)
+    element->updateControlsVisibility();
+}
+
 HTMLMediaElement::HTMLMediaElement(const QualifiedName& tagName,
                                    Document& document)
     : HTMLElement(tagName, document),
       SuspendableObject(&document),
       m_loadTimer(TaskRunnerHelper::get(TaskType::Unthrottled, &document),
                   this,
                   &HTMLMediaElement::loadTimerFired),
       m_progressEventTimer(
           TaskRunnerHelper::get(TaskType::Unthrottled, &document),
           this,
@@ skipping 1984 matching lines @@
   return fastHasAttribute(loopAttr);
 }
 
 void HTMLMediaElement::setLoop(bool b) {
   BLINK_MEDIA_LOG << "setLoop(" << (void*)this << ", " << boolString(b) << ")";
   setBooleanAttribute(loopAttr, b);
 }
 
 bool HTMLMediaElement::shouldShowControls(
     const RecordMetricsBehavior recordMetrics) const {
+  Settings* settings = document().settings();
+  if (settings && !settings->getMediaControlsEnabled()) {
+    if (recordMetrics == RecordMetricsBehavior::DoRecord)
+      showControlsHistogram().count(MediaControlsShowDisabledSettings);
+    return false;
+  }
+
   if (fastHasAttribute(controlsAttr)) {
     if (recordMetrics == RecordMetricsBehavior::DoRecord)
       showControlsHistogram().count(MediaControlsShowAttribute);
     return true;
   }
 
   if (isFullscreen()) {
     if (recordMetrics == RecordMetricsBehavior::DoRecord)
       showControlsHistogram().count(MediaControlsShowFullscreen);
     return true;
@@ skipping 1752 matching lines @@
       kMostlyFillViewportBecomeStableSeconds, BLINK_FROM_HERE);
 }
 
 void HTMLMediaElement::viewportFillDebouncerTimerFired(TimerBase*) {
   m_mostlyFillingViewport = true;
   if (m_webMediaPlayer)
     m_webMediaPlayer->becameDominantVisibleContent(m_mostlyFillingViewport);
 }
 
 }  // namespace blink