Adds keyboard functionality for videos.

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 24 matching lines @@
 #include "core/HTMLNames.h"
 #include "core/css/MediaList.h"
 #include "core/dom/Attribute.h"
 #include "core/dom/DOMException.h"
 #include "core/dom/ElementTraversal.h"
 #include "core/dom/ElementVisibilityObserver.h"
 #include "core/dom/Fullscreen.h"
 #include "core/dom/TaskRunnerHelper.h"
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/events/Event.h"
+#include "core/events/KeyboardEvent.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/LocalFrameClient.h"
 #include "core/frame/Settings.h"
 #include "core/frame/UseCounter.h"
 #include "core/frame/csp/ContentSecurityPolicy.h"
 #include "core/html/AutoplayUmaHelper.h"
 #include "core/html/HTMLMediaSource.h"
 #include "core/html/HTMLSourceElement.h"
 #include "core/html/HTMLTrackElement.h"
@@ skipping 23 matching lines @@
 #include "platform/UserGestureIndicator.h"
 #include "platform/audio/AudioBus.h"
 #include "platform/audio/AudioSourceProviderClient.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/mediastream/MediaStreamDescriptor.h"
 #include "platform/network/NetworkStateNotifier.h"
 #include "platform/network/mime/ContentType.h"
 #include "platform/network/mime/MIMETypeFromURL.h"
 #include "platform/weborigin/SecurityOrigin.h"
 #include "public/platform/Platform.h"
+#include "public/platform/UserMetricsAction.h"
 #include "public/platform/WebAudioSourceProvider.h"
 #include "public/platform/WebContentDecryptionModule.h"
 #include "public/platform/WebInbandTextTrack.h"
 #include "public/platform/WebMediaPlayerSource.h"
 #include "public/platform/WebMediaStream.h"
 #include "public/platform/modules/remoteplayback/WebRemotePlaybackAvailability.h"
 #include "public/platform/modules/remoteplayback/WebRemotePlaybackClient.h"
 #include "public/platform/modules/remoteplayback/WebRemotePlaybackState.h"
 #include "wtf/AutoReset.h"
 #include "wtf/CurrentTime.h"
@@ skipping 3611 matching lines @@
 
   ShadowRoot& shadowRoot = ensureUserAgentShadowRoot();
   m_mediaControls = MediaControls::create(*this, shadowRoot);
 
   // The media controls should be inserted after the text track container,
   // so that they are rendered in front of captions and subtitles. This check
   // is verifying the contract.
   assertShadowRootChildren(shadowRoot);
 }
 
+void HTMLMediaElement::defaultEventHandler(Event* event) {
+  if (isFocusedElementInDocument()) {
+    if (event->isKeyboardEvent()) {
+      m_mediaControls->defaultEventHandler(event);

[mlamouri (slow - plz ping), 2017/03/16 12:17:22]

We are working on decoupling HTMLMediaElement and MediaControls. Would it make
sense to have MediaControlsMediaEventListener listen to some keyboard events on
HTMLMediaElement and transfer back the information to MediaControls instead?

[CJ, 2017/03/16 20:08:28]

I don't think I know how these classes relate to each other fully, because it
would seem that doesn't make much sense. The MediaControlsMediaEventListener
seems to listen for events after the MediaEvent has happened. I'd be rather
happy if we had a moment to sit down and talk about this next week.

+    }
+  }
+  HTMLElement::defaultEventHandler(event);
+}
+
 void HTMLMediaElement::updateControlsVisibility() {
   if (!isConnected()) {
     if (mediaControls())
       mediaControls()->hide();
     return;
   }
 
   ensureMediaControls();
   // TODO(mlamouri): this doesn't sound needed but the following tests, on
   // Android fails when removed:
@@ skipping 469 matching lines @@
       kMostlyFillViewportBecomeStableSeconds, BLINK_FROM_HERE);
 }
 
 void HTMLMediaElement::viewportFillDebouncerTimerFired(TimerBase*) {
   m_mostlyFillingViewport = true;
   if (m_webMediaPlayer)
     m_webMediaPlayer->becameDominantVisibleContent(m_mostlyFillingViewport);
 }
 
 }  // namespace blink