Plumb site engagement to the renderer process.

third_party/WebKit/Source/web/WebLocalFrameImpl.cpp

Index: third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp b/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
index 9887dd87987013fc175e43088aac32a9681f2f31..2d6827d0632450c24374d220cc53ca9caa641015 100644
--- a/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
+++ b/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
@@ -2296,6 +2296,10 @@ void WebLocalFrameImpl::saveImageAt(const WebPoint& posInViewport) {
   m_client->saveImageFromDataURL(url);
 }
 
+void WebLocalFrameImpl::setEngagementLevel(mojom::EngagementLevel level) {
+  frame()->document()->setEngagementLevel(level);
+}
+
 WebSandboxFlags WebLocalFrameImpl::effectiveSandboxFlags() const {
   if (!frame())
     return WebSandboxFlags::None;