Adds keyboard functionality for videos.

third_party/WebKit/Source/core/html/shadow/MediaControlsMediaEventListener.cpp

Index: third_party/WebKit/Source/core/html/shadow/MediaControlsMediaEventListener.cpp
diff --git a/third_party/WebKit/Source/core/html/shadow/MediaControlsMediaEventListener.cpp b/third_party/WebKit/Source/core/html/shadow/MediaControlsMediaEventListener.cpp
index 19a7ecec16d7ee6f7bd9d6c74393d4e69127a33b..1719c33c65bf4631858b6c149ac75b4105033a14 100644
--- a/third_party/WebKit/Source/core/html/shadow/MediaControlsMediaEventListener.cpp
+++ b/third_party/WebKit/Source/core/html/shadow/MediaControlsMediaEventListener.cpp
@@ -29,6 +29,9 @@ void MediaControlsMediaEventListener::attach() {
   mediaElement().addEventListener(EventTypeNames::durationchange, this, false);
   mediaElement().addEventListener(EventTypeNames::error, this, false);
   mediaElement().addEventListener(EventTypeNames::loadedmetadata, this, false);
+  mediaElement().addEventListener(EventTypeNames::keypress, this, false);
+  mediaElement().addEventListener(EventTypeNames::keydown, this, false);
+  mediaElement().addEventListener(EventTypeNames::keyup, this, false);
 
   // Listen to two different fullscreen events in order to make sure the new and
   // old APIs are handled.
@@ -122,6 +125,12 @@ void MediaControlsMediaEventListener::handleEvent(
     return;
   }
 
+  if (event->type() == EventTypeNames::keypress || EventTypeNames::keydown ||
+      EventTypeNames::keyup) {
+    m_mediaControls->onMediaKeyboardEvent(event);
+    return;
+  }
+
   NOTREACHED();
 }