Preliminary paint property walk implementation for SPv2

third_party/WebKit/Source/core/paint/test_data/fixed-position.html

Index: third_party/WebKit/Source/core/paint/test_data/fixed-position.html
diff --git a/third_party/WebKit/Source/core/paint/test_data/fixed-position.html b/third_party/WebKit/Source/core/paint/test_data/fixed-position.html
new file mode 100644
index 0000000000000000000000000000000000000000..e1c5393c80f4ecbe8654c003cee7dea57aac75fb
--- /dev/null
+++ b/third_party/WebKit/Source/core/paint/test_data/fixed-position.html
@@ -0,0 +1,38 @@
+<style>
+.positioned-scroll {
+    position: absolute;
+    left: 100px;
+    top: 50px;
+    width: 400px;
+    height: 300px;
+    overflow: scroll;
+}
+
+.bloat {
+    height: 10000px;
+}
+
+.fixed {
+    position: fixed;
+    left: 200px;
+    top: 150px;
+    width: 100px;
+    height: 100px;
+}
+
+.transformed-scroll {
+    transform: scaleX(2);
+    width: 400px;
+    height: 300px;
+    overflow: scroll;
+}
+</style>
+<div class="positioned-scroll">
+    <div class="bloat"></div>
+    <div class="fixed" id="target1"></div>
+</div>
+<div class="transformed-scroll" id="scroller">
+    <div class="bloat"></div>
+    <div class="fixed" id="target2"></div>
+</div>
+This test verifies fixed-position elements correctly skip scrolling and adhere to transformed container.