Adjust visual overflow rect for rounded/shifted ascent/descent

third_party/WebKit/LayoutTests/platform/mac/paint/invalidation/flexbox/scrollbars-changed-expected.txt

Index: third_party/WebKit/LayoutTests/platform/mac/paint/invalidation/flexbox/scrollbars-changed-expected.txt
diff --git a/third_party/WebKit/LayoutTests/platform/mac/paint/invalidation/flexbox/scrollbars-changed-expected.txt b/third_party/WebKit/LayoutTests/platform/mac/paint/invalidation/flexbox/scrollbars-changed-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c5f998f2cb38f8b807de70420b67c214536fddcd
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/platform/mac/paint/invalidation/flexbox/scrollbars-changed-expected.txt
@@ -0,0 +1,54 @@
+{
+  "layers": [
+    {
+      "name": "LayoutView #document",
+      "bounds": [800, 600],
+      "contentsOpaque": true,
+      "drawsContent": true,
+      "paintInvalidations": [
+        {
+          "object": "LayoutBlockFlow DIV id='dynamic' class='content'",
+          "rect": [0, 0, 185, 30],
+          "reason": "full"
+        },
+        {
+          "object": "LayoutBlockFlow DIV id='scroller'",
+          "rect": [185, 0, 15, 100],
+          "reason": "scroll"
+        },
+        {
+          "object": "LayoutText #text",
+          "rect": [0, 4, 15, 17],
+          "reason": "layoutObject removal"
+        }
+      ]
+    }
+  ],
+  "objectPaintInvalidations": [
+    {
+      "object": "LayoutText #text",
+      "reason": "layoutObject removal"
+    },
+    {
+      "object": "VerticalScrollbar",
+      "reason": "scroll"
+    },
+    {
+      "object": "LayoutBlockFlow DIV id='dynamic' class='content'",
+      "reason": "full"
+    },
+    {
+      "object": "RootInlineBox",
+      "reason": "full"
+    },
+    {
+      "object": "LayoutText #text",
+      "reason": "layoutObject insertion"
+    },
+    {
+      "object": "InlineTextBox 'z'",
+      "reason": "layoutObject insertion"
+    }
+  ]
+}
+