Rename last two virtual test suites to complete VirtualTestSuite refactoring.

LayoutTests/platform/mac/virtual/gpu/compositedscrolling/overflow/content-gains-scrollbars-expected.txt

Index: LayoutTests/platform/mac/virtual/gpu/compositedscrolling/overflow/content-gains-scrollbars-expected.txt
diff --git a/LayoutTests/platform/mac/virtual/gpu/compositedscrolling/overflow/content-gains-scrollbars-expected.txt b/LayoutTests/platform/mac/virtual/gpu/compositedscrolling/overflow/content-gains-scrollbars-expected.txt
deleted file mode 100644
index d6228a87702dc0cb31c473da38605c3c82db74ab..0000000000000000000000000000000000000000
--- a/LayoutTests/platform/mac/virtual/gpu/compositedscrolling/overflow/content-gains-scrollbars-expected.txt
+++ /dev/null
@@ -1,154 +0,0 @@
-{
-  "bounds": [800, 600],
-  "children": [
-    {
-      "bounds": [800, 600],
-      "contentsOpaque": true,
-      "drawsContent": true,
-      "children": [
-        {
-          "position": [8, 13],
-          "bounds": [100, 100],
-          "drawsContent": true,
-          "children": [
-            {
-              "bounds": [85, 100],
-              "children": [
-                {
-                  "bounds": [85, 200],
-                  "shouldFlattenTransform": false,
-                  "children": [
-                    {
-                      "shouldFlattenTransform": false,
-                      "children": [
-                        {
-                          "bounds": [10, 200]
-                        }
-                      ]
-                    }
-                  ]
-                }
-              ]
-            },
-            {
-              "children": [
-                {
-                  "position": [85, 0],
-                  "bounds": [15, 100]
-                }
-              ]
-            }
-          ]
-        },
-        {
-          "position": [8, 13],
-          "bounds": [100, 100],
-          "drawsContent": true,
-          "children": [
-            {
-              "bounds": [100, 85],
-              "children": [
-                {
-                  "bounds": [200, 85],
-                  "shouldFlattenTransform": false,
-                  "children": [
-                    {
-                      "shouldFlattenTransform": false,
-                      "children": [
-                        {
-                          "bounds": [200, 10]
-                        }
-                      ]
-                    }
-                  ]
-                }
-              ]
-            },
-            {
-              "children": [
-                {
-                  "position": [0, 85],
-                  "bounds": [100, 15]
-                }
-              ]
-            }
-          ]
-        },
-        {
-          "position": [8, 13],
-          "bounds": [100, 100],
-          "drawsContent": true,
-          "children": [
-            {
-              "bounds": [85, 85],
-              "children": [
-                {
-                  "bounds": [200, 200],
-                  "shouldFlattenTransform": false,
-                  "children": [
-                    {
-                      "shouldFlattenTransform": false,
-                      "children": [
-                        {
-                          "bounds": [200, 200]
-                        }
-                      ]
-                    }
-                  ]
-                }
-              ]
-            },
-            {
-              "children": [
-                {
-                  "position": [0, 85],
-                  "bounds": [85, 15]
-                },
-                {
-                  "position": [85, 0],
-                  "bounds": [15, 85]
-                },
-                {
-                  "position": [85, 85],
-                  "bounds": [15, 15],
-                  "drawsContent": true
-                }
-              ]
-            }
-          ]
-        },
-        {
-          "position": [8, 13],
-          "bounds": [100, 100],
-          "drawsContent": true,
-          "children": [
-            {
-              "bounds": [100, 100],
-              "children": [
-                {
-                  "bounds": [10, 10],
-                  "drawsContent": true,
-                  "children": [
-                    {
-
-                    }
-                  ]
-                }
-              ]
-            },
-            {
-              "children": [
-                {
-                  "position": [85, 85],
-                  "bounds": [15, 15],
-                  "drawsContent": true
-                }
-              ]
-            }
-          ]
-        }
-      ]
-    }
-  ]
-}
-