[Blink, Media] Added controlsList to HTMLMediaElement

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

Index: third_party/WebKit/Source/core/html/shadow/MediaControlElements.cpp
diff --git a/third_party/WebKit/Source/core/html/shadow/MediaControlElements.cpp b/third_party/WebKit/Source/core/html/shadow/MediaControlElements.cpp
index 8bc5052f76bbfc6dbdc72146772a104c0f6a140d..720b8e0f44b1d644e76865c9f61d24f51a53ca11 100644
--- a/third_party/WebKit/Source/core/html/shadow/MediaControlElements.cpp
+++ b/third_party/WebKit/Source/core/html/shadow/MediaControlElements.cpp
@@ -38,6 +38,7 @@
 #include "core/events/MouseEvent.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Settings.h"
+#include "core/frame/UseCounter.h"
 #include "core/html/HTMLAnchorElement.h"
 #include "core/html/HTMLLabelElement.h"
 #include "core/html/HTMLMediaSource.h"
@@ -700,6 +701,13 @@ bool MediaControlDownloadButtonElement::shouldDisplayDownloadButton() {
   if (mediaElement().duration() == std::numeric_limits<double>::infinity())
     return false;
 
+  // The attribute disables the download button.
+  if (mediaElement().controlsList()->shouldHideDownload()) {
+    UseCounter::count(mediaElement().document(),
+                      UseCounter::HTMLMediaElementControlsListNoDownload);
+    return false;
+  }
+
   return true;
 }