Layers that have a backdrop-filter should paints contents

third_party/WebKit/LayoutTests/compositing/layer-creation/fixed-position-out-of-view-with-backdrop-filter-expected.txt

Index: third_party/WebKit/LayoutTests/compositing/layer-creation/fixed-position-out-of-view-with-backdrop-filter-expected.txt
diff --git a/third_party/WebKit/LayoutTests/compositing/layer-creation/fixed-position-out-of-view-expected.txt b/third_party/WebKit/LayoutTests/compositing/layer-creation/fixed-position-out-of-view-with-backdrop-filter-expected.txt
similarity index 61%
copy from third_party/WebKit/LayoutTests/compositing/layer-creation/fixed-position-out-of-view-expected.txt
copy to third_party/WebKit/LayoutTests/compositing/layer-creation/fixed-position-out-of-view-with-backdrop-filter-expected.txt
index e7be6b3ed9beb1ce538d741933ac9c3bbdfd4816..3d6a98e713ed9ba21f0fbfec442bf82f26ce99b2 100644
--- a/third_party/WebKit/LayoutTests/compositing/layer-creation/fixed-position-out-of-view-expected.txt
+++ b/third_party/WebKit/LayoutTests/compositing/layer-creation/fixed-position-out-of-view-with-backdrop-filter-expected.txt
@@ -12,29 +12,21 @@
             {
               "position": [8, 1013],
               "bounds": [10, 10],
-              "contentsOpaque": true,
-              "drawsContent": true,
-              "backgroundColor": "#C0C0C0"
+              "drawsContent": true
             },
             {
               "position": [8, -100],
               "bounds": [10, 10],
-              "contentsOpaque": true,
-              "drawsContent": true,
-              "backgroundColor": "#C0C0C0"
+              "drawsContent": true
             },
             {
               "position": [1000, 0],
               "bounds": [10, 10],
-              "contentsOpaque": true,
-              "drawsContent": true,
-              "backgroundColor": "#C0C0C0"
+              "drawsContent": true
             },
             {
               "bounds": [10, 10],
-              "contentsOpaque": true,
-              "drawsContent": true,
-              "backgroundColor": "#C0C0C0"
+              "drawsContent": true
             },
             {
               "bounds": [785, 1021],