Add a download button to the media player

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

 /*
  * Copyright (C) 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Google 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.
@@ skipping 609 matching lines @@
 
 void MediaControlOverflowMenuListElement::defaultEventHandler(Event* event)
 {
     if (event->type() == EventTypeNames::click)
         event->setDefaultHandled();
 
     MediaControlDivElement::defaultEventHandler(event);
 }
 
 // ----------------------------
+MediaControlDownloadButtonElement::MediaControlDownloadButtonElement(MediaControls& mediaControls)
+    : MediaControlInputElement(mediaControls, MediaDownloadButton)
+{
+}
+
+MediaControlDownloadButtonElement* MediaControlDownloadButtonElement::create(MediaControls& mediaControls, Document* document)
+{
+    MediaControlDownloadButtonElement* button = new MediaControlDownloadButtonElement(mediaControls);
+    button->ensureUserAgentShadowRoot();
+    button->setType(InputTypeNames::button);
+    button->setShadowPseudoId(AtomicString("-internal-download-button"));
+    button->setIsWanted(false);
+    return button;
+}
+
+WebLocalizedString::Name MediaControlDownloadButtonElement::getOverflowStringName()
+{
+    return WebLocalizedString::OverflowMenuDownload;
+}
+
+bool MediaControlDownloadButtonElement::shouldDisplayDownloadButton()
+{
+    const KURL& url = mediaElement().currentSrc();
+    if (!HTMLMediaElement::isMediaStreamURL(url.getString()) && !url.protocolIs("blob") && !HTMLMediaSource::lookup(url)) {
+        return true;
+    }
+    return false;
+}
+
+void MediaControlDownloadButtonElement::defaultEventHandler(Event* event)
+{
+    // TODO(kdsilva): The implementation will be finished as part of
+    // https://crbug.com/601247
+}
+
+// ----------------------------
 
 MediaControlTimelineElement::MediaControlTimelineElement(MediaControls& mediaControls)
     : MediaControlInputElement(mediaControls, MediaSlider)
 {
 }
 
 MediaControlTimelineElement* MediaControlTimelineElement::create(MediaControls& mediaControls)
 {
     MediaControlTimelineElement* timeline = new MediaControlTimelineElement(mediaControls);
     timeline->ensureUserAgentShadowRoot();
@@ skipping 300 matching lines @@
 }
 
 MediaControlCurrentTimeDisplayElement* MediaControlCurrentTimeDisplayElement::create(MediaControls& mediaControls)
 {
     MediaControlCurrentTimeDisplayElement* element = new MediaControlCurrentTimeDisplayElement(mediaControls);
     element->setShadowPseudoId(AtomicString("-webkit-media-controls-current-time-display"));
     return element;
 }
 
 } // namespace blink