ui: Cleanup class/struct forward declarations

third_party/WebKit/LayoutTests/flag-specific/enable-blink-features=SlimmingPaintInvalidation/paint/invalidation/window-resize-percent-html-expected.txt

Index: third_party/WebKit/LayoutTests/flag-specific/enable-blink-features=SlimmingPaintInvalidation/paint/invalidation/window-resize-percent-html-expected.txt
diff --git a/third_party/WebKit/LayoutTests/flag-specific/enable-blink-features=SlimmingPaintInvalidation/paint/invalidation/window-resize-percent-html-expected.txt b/third_party/WebKit/LayoutTests/flag-specific/enable-blink-features=SlimmingPaintInvalidation/paint/invalidation/window-resize-percent-html-expected.txt
index 34009253654fe7824c728a3e1fb0ff31a085e742..b12c2338232d3058c40ce50eabc53fa355cc5f48 100644
--- a/third_party/WebKit/LayoutTests/flag-specific/enable-blink-features=SlimmingPaintInvalidation/paint/invalidation/window-resize-percent-html-expected.txt
+++ b/third_party/WebKit/LayoutTests/flag-specific/enable-blink-features=SlimmingPaintInvalidation/paint/invalidation/window-resize-percent-html-expected.txt
@@ -12,14 +12,9 @@
           "reason": "incremental"
         },
         {
-          "object": "LayoutBlockFlow HTML",
-          "rect": [0, 0, 600, 250],
-          "reason": "forced by layout"
-        },
-        {
           "object": "LayoutBlockFlow DIV",
           "rect": [0, 0, 300, 125],
-          "reason": "bounds change"
+          "reason": "border box change"
         }
       ]
     }
@@ -30,12 +25,8 @@
       "reason": "incremental"
     },
     {
-      "object": "LayoutBlockFlow HTML",
-      "reason": "forced by layout"
-    },
-    {
       "object": "LayoutBlockFlow DIV",
-      "reason": "bounds change"
+      "reason": "border box change"
     }
   ]
 }
@@ -48,14 +39,9 @@
       "drawsContent": true,
       "paintInvalidations": [
         {
-          "object": "LayoutBlockFlow HTML",
-          "rect": [0, 0, 600, 125],
-          "reason": "forced by layout"
-        },
-        {
           "object": "LayoutBlockFlow DIV",
           "rect": [0, 0, 300, 63],
-          "reason": "bounds change"
+          "reason": "border box change"
         },
         {
           "object": "LayoutView #document",
@@ -71,12 +57,8 @@
       "reason": "incremental"
     },
     {
-      "object": "LayoutBlockFlow HTML",
-      "reason": "forced by layout"
-    },
-    {
       "object": "LayoutBlockFlow DIV",
-      "reason": "bounds change"
+      "reason": "border box change"
     }
   ]
 }
@@ -94,14 +76,9 @@
           "reason": "incremental"
         },
         {
-          "object": "LayoutBlockFlow HTML",
-          "rect": [0, 0, 400, 300],
-          "reason": "forced by layout"
-        },
-        {
           "object": "LayoutBlockFlow DIV",
           "rect": [0, 0, 200, 150],
-          "reason": "bounds change"
+          "reason": "border box change"
         }
       ]
     }
@@ -112,12 +89,8 @@
       "reason": "incremental"
     },
     {
-      "object": "LayoutBlockFlow HTML",
-      "reason": "forced by layout"
-    },
-    {
       "object": "LayoutBlockFlow DIV",
-      "reason": "bounds change"
+      "reason": "border box change"
     }
   ]
 }
@@ -130,11 +103,6 @@
       "drawsContent": true,
       "paintInvalidations": [
         {
-          "object": "LayoutBlockFlow HTML",
-          "rect": [0, 0, 800, 300],
-          "reason": "forced by layout"
-        },
-        {
           "object": "LayoutView #document",
           "rect": [400, 0, 400, 600],
           "reason": "incremental"
@@ -153,10 +121,6 @@
       "reason": "incremental"
     },
     {
-      "object": "LayoutBlockFlow HTML",
-      "reason": "forced by layout"
-    },
-    {
       "object": "LayoutBlockFlow DIV",
       "reason": "incremental"
     }