Refactor overlay fullscreen video handling into a single callback

third_party/WebKit/Source/web/WebViewImpl.cpp

Index: third_party/WebKit/Source/web/WebViewImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebViewImpl.cpp b/third_party/WebKit/Source/web/WebViewImpl.cpp
index 4fd3c4068ab5c028d8e9844ebc6f5d0d43f8f29a..ccbc76e96dd0add32d5609f687d4adbdb966883f 100644
--- a/third_party/WebKit/Source/web/WebViewImpl.cpp
+++ b/third_party/WebKit/Source/web/WebViewImpl.cpp
@@ -2081,6 +2081,11 @@ void WebViewImpl::exitFullscreen(LocalFrame* frame) {
   m_fullscreenController->exitFullscreen(frame);
 }
 
+void WebViewImpl::fullscreenElementChanged(Element* fromElement,
+                                           Element* toElement) {
+  m_fullscreenController->fullscreenElementChanged(fromElement, toElement);
+}
+
 bool WebViewImpl::hasHorizontalScrollbar() {
   return mainFrameImpl()
       ->frameView()