Layers that have a backdrop-filter should paints contents

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

Index: third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp
diff --git a/third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp b/third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp
index d41aef293f0b95ce9767c1ba7c63729d3dc381f2..18405f2c3df70cf60bb1a8bce9015f19a68a74ca 100644
--- a/third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp
+++ b/third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp
@@ -122,16 +122,16 @@ static inline bool isAcceleratedCanvas(const LayoutObject* layoutObject)
     return false;
 }
 
-static bool hasBoxDecorationsOrBackgroundImage(const ComputedStyle& style)
+static bool hasBoxDecorationsOrBackgroundImageOrBackdropFilter(const ComputedStyle& style)
 {
-    return style.hasBoxDecorations() || style.hasBackgroundImage();
+    return style.hasBoxDecorations() || style.hasBackgroundImageOrBackdropFilter();
 }
 
 static bool contentLayerSupportsDirectBackgroundComposition(const LayoutObject* layoutObject)
 {
     // No support for decorations - border, border-radius or outline.
     // Only simple background - solid color or transparent.
-    if (hasBoxDecorationsOrBackgroundImage(layoutObject->styleRef()))
+    if (hasBoxDecorationsOrBackgroundImageOrBackdropFilter(layoutObject->styleRef()))
         return false;
 
     // If there is no background, there is nothing to support.
@@ -1887,13 +1887,13 @@ bool CompositedLayerMapping::containsPaintedContent() const
         LayoutObject* rootObject = layoutObject->document().documentElement() ? layoutObject->document().documentElement()->layoutObject() : 0;
         // Reject anything that has a border, a border-radius or outline,
         // or is not a simple background (no background, or solid color).
-        if (rootObject && hasBoxDecorationsOrBackgroundImage(rootObject->styleRef()))
+        if (rootObject && hasBoxDecorationsOrBackgroundImageOrBackdropFilter(rootObject->styleRef()))
             return true;
 
         // Now look at the body's layoutObject.
         HTMLElement* body = layoutObject->document().body();
         LayoutObject* bodyObject = isHTMLBodyElement(body) ? body->layoutObject() : 0;
-        if (bodyObject && hasBoxDecorationsOrBackgroundImage(bodyObject->styleRef()))
+        if (bodyObject && hasBoxDecorationsOrBackgroundImageOrBackdropFilter(bodyObject->styleRef()))
             return true;
     }