blink: Add backdrop-filter support

Source/core/layout/compositing/CompositedDeprecatedPaintLayerMapping.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 209 matching lines @@
     return graphicsLayer.release();
 }
 
 void CompositedDeprecatedPaintLayerMapping::createPrimaryGraphicsLayer()
 {
     m_graphicsLayer = createGraphicsLayer(m_owningLayer.compositingReasons());
 
     updateOpacity(layoutObject()->styleRef());
     updateTransform(layoutObject()->styleRef());
     updateFilters(layoutObject()->styleRef());
+    updateBackdropFilters(layoutObject()->styleRef());
 
     if (RuntimeEnabledFeatures::cssCompositingEnabled()) {
         updateLayerBlendMode(layoutObject()->styleRef());
         updateIsRootForIsolatedGroup();
     }
 }
 
 void CompositedDeprecatedPaintLayerMapping::destroyGraphicsLayers()
 {
     if (m_graphicsLayer)
@@ skipping 29 matching lines @@
     }
 
     m_graphicsLayer->setTransform(t);
 }
 
 void CompositedDeprecatedPaintLayerMapping::updateFilters(const ComputedStyle& style)
 {
     m_graphicsLayer->setFilters(owningLayer().computeFilterOperations(style));
 }
 
+void CompositedDeprecatedPaintLayerMapping::updateBackdropFilters(const ComputedStyle& style)
+{
+    m_graphicsLayer->setBackdropFilters(owningLayer().computeBackdropFilterOperations(style));
+}
+
 void CompositedDeprecatedPaintLayerMapping::updateLayerBlendMode(const ComputedStyle& style)
 {
     setBlendMode(style.blendMode());
 }
 
 void CompositedDeprecatedPaintLayerMapping::updateIsRootForIsolatedGroup()
 {
     bool isolate = m_owningLayer.shouldIsolateCompositedDescendants();
 
     // non stacking context layers should never isolate
@@ skipping 364 matching lines @@
     if (!layoutObject()->style()->isRunningTransformAnimationOnCompositor())
         updateTransform(layoutObject()->styleRef());
 
     // Set opacity, if it is not animating.
     if (!layoutObject()->style()->isRunningOpacityAnimationOnCompositor())
         updateOpacity(layoutObject()->styleRef());
 
     if (!layoutObject()->style()->isRunningFilterAnimationOnCompositor())
         updateFilters(layoutObject()->styleRef());
 
+    if (!layoutObject()->style()->isRunningBackdropFilterAnimationOnCompositor())
+        updateBackdropFilters(layoutObject()->styleRef());
+
     // We compute everything relative to the enclosing compositing layer.
     IntRect ancestorCompositingBounds;
     if (compositingContainer) {
         ASSERT(compositingContainer->hasCompositedDeprecatedPaintLayerMapping());
         ancestorCompositingBounds = compositingContainer->compositedDeprecatedPaintLayerMapping()->pixelSnappedCompositedBounds();
     }
 
     IntRect localCompositingBounds;
     IntRect relativeCompositingBounds;
     LayoutPoint offsetFromCompositedAncestor;
@@ skipping 1712 matching lines @@
     } else if (graphicsLayer == m_scrollingBlockSelectionLayer.get()) {
         name = "Scrolling Block Selection Layer";
     } else {
         ASSERT_NOT_REACHED();
     }
 
     return name;
 }
 
 } // namespace blink