Replace RenderFullscreen with top layer - Take II

Source/web/FullscreenController.cpp

Index: Source/web/FullscreenController.cpp
diff --git a/Source/web/FullscreenController.cpp b/Source/web/FullscreenController.cpp
index 5449d443a29dbf2b1f1a240b31f55e23cf4045c6..157328c4ae90c3f09f618ea5703414819b5483cf 100644
--- a/Source/web/FullscreenController.cpp
+++ b/Source/web/FullscreenController.cpp
@@ -168,9 +168,10 @@ void FullscreenController::updateSize()
     if (!isFullscreen())
         return;
 
-    RenderFullScreen* renderer = Fullscreen::from(*m_fullScreenFrame->document()).fullScreenRenderer();
-    if (renderer)
-        renderer->updateStyle();
+    Document* document = m_fullScreenFrame->document();
+    Element* fullscreenElement = Fullscreen::currentFullScreenElementFrom(*document);
+    if (fullscreenElement)
+        document->setNeedsStyleRecalc(SubtreeStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::FullScreen));

[esprehn, 2015/02/20 06:23:45]

Doing a full document recalc every time we go in and out is very expensive. We
can do better than that...

[rune, 2015/02/23 10:23:31]

I prepared [1], but decided to await this CL since they'd collide.

[1] https://codereview.chromium.org/803133002/

 }
 
 void FullscreenController::trace(Visitor* visitor)