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 08c5a6650bed3570c784f2b8faf0abfe3222a4d4..36cfad32c04150271df88057bed946431469a1a9 100644
--- a/third_party/WebKit/Source/web/WebViewImpl.cpp
+++ b/third_party/WebKit/Source/web/WebViewImpl.cpp
@@ -2084,6 +2084,11 @@ 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()