Disable drawing of video backgrounds in OverlayFullscreenVideo

third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp

 /*
  * Copyright (C) 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 18 matching lines @@
 #include "core/dom/DOMNodeIds.h"
 #include "core/fetch/ImageResource.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/RemoteFrame.h"
 #include "core/frame/Settings.h"
 #include "core/frame/VisualViewport.h"
 #include "core/html/HTMLCanvasElement.h"
 #include "core/html/HTMLIFrameElement.h"
 #include "core/html/HTMLMediaElement.h"
+#include "core/html/HTMLVideoElement.h"
 #include "core/html/canvas/CanvasRenderingContext.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/layout/LayoutEmbeddedObject.h"
 #include "core/layout/LayoutHTMLCanvas.h"
 #include "core/layout/LayoutImage.h"
 #include "core/layout/LayoutPart.h"
 #include "core/layout/LayoutVideo.h"
 #include "core/layout/LayoutView.h"
 #include "core/layout/compositing/PaintLayerCompositor.h"
 #include "core/page/ChromeClient.h"
@@ skipping 743 matching lines @@
 
     FloatSize oldSize = m_graphicsLayer->size();
     const FloatSize contentsSize(relativeCompositingBounds.size());
     if (oldSize != contentsSize)
         m_graphicsLayer->setSize(contentsSize);
 
     // m_graphicsLayer is the corresponding GraphicsLayer for this PaintLayer and its non-compositing
     // descendants. So, the visibility flag for m_graphicsLayer should be true if there are any
     // non-compositing visible layers.
     bool contentsVisible = m_owningLayer.hasVisibleContent() || hasVisibleNonCompositingDescendant(&m_owningLayer);
-
     m_graphicsLayer->setContentsVisible(contentsVisible);
 
     m_graphicsLayer->setBackfaceVisibility(layoutObject()->style()->backfaceVisibility() == BackfaceVisibilityVisible);
 }
 
 void CompositedLayerMapping::computeGraphicsLayerParentLocation(const PaintLayer* compositingContainer, const IntRect& ancestorCompositingBounds, IntPoint& graphicsLayerParentLocation)
 {
     if (compositingContainer && compositingContainer->compositedLayerMapping()->hasClippingLayer()) {
         // If the compositing ancestor has a layer to clip children, we parent in that, and therefore
         // position relative to it.
@@ skipping 404 matching lines @@
     // And drawing of composited children takes into account the subpixel
     // accumulation of this CLM already (through its own
     // graphicsLayerParentLocation it appears).
     FloatPoint offsetDueToAncestorGraphicsLayers = m_graphicsLayer->position() + graphicsLayerParentLocation;
     m_contentOffsetInCompositingLayer = LayoutSize(snappedOffsetFromCompositedAncestor - offsetDueToAncestorGraphicsLayers);
     m_contentOffsetInCompositingLayerDirty = false;
 }
 
 void CompositedLayerMapping::updateDrawsContent()
 {
-    bool hasPaintedContent = containsPaintedContent();
+    bool inOverlayFullscreenVideo = false;
+    if (layoutObject()->isVideo()) {
+        HTMLVideoElement* videoElement = toHTMLVideoElement(layoutObject()->node());
+        if (videoElement->isFullscreen() && videoElement->usesOverlayFullscreenVideo())
+            inOverlayFullscreenVideo = true;
+    }
+    bool hasPaintedContent = inOverlayFullscreenVideo ? false : containsPaintedContent();
     m_graphicsLayer->setDrawsContent(hasPaintedContent);
 
     if (m_scrollingLayer) {
         // m_scrollingLayer never has backing store.
         // m_scrollingContentsLayer only needs backing store if the scrolled contents need to paint.
         m_scrollingContentsAreEmpty = !m_owningLayer.hasVisibleContent() || !(layoutObject()->hasBackground() || layoutObject()->hasBackdropFilter() || paintsChildren());
         m_scrollingContentsLayer->setDrawsContent(!m_scrollingContentsAreEmpty);
     }
 
     if (hasPaintedContent && isAcceleratedCanvas(layoutObject())) {
@@ skipping 1403 matching lines @@
     } else if (graphicsLayer == m_scrollingContentsLayer.get()) {
         name = "Scrolling Contents Layer";
     } else {
         ASSERT_NOT_REACHED();
     }
 
     return name;
 }
 
 } // namespace blink