Use process/control messages (instead of RVH messages) for layout tests.

third_party/WebKit/LayoutTests/platform/linux/paint/invalidation/resize-iframe-text-expected.txt

Index: third_party/WebKit/LayoutTests/platform/linux/paint/invalidation/resize-iframe-text-expected.txt
diff --git a/third_party/WebKit/LayoutTests/platform/linux/paint/invalidation/resize-iframe-text-expected.txt b/third_party/WebKit/LayoutTests/platform/linux/paint/invalidation/resize-iframe-text-expected.txt
index 5f10ddb2141c6a878e615c63f66ebf8befab9f52..0c0b075aac4299e8c0972034440bbdf2cc0b037e 100644
--- a/third_party/WebKit/LayoutTests/platform/linux/paint/invalidation/resize-iframe-text-expected.txt
+++ b/third_party/WebKit/LayoutTests/platform/linux/paint/invalidation/resize-iframe-text-expected.txt
@@ -9,13 +9,13 @@
       "drawsContent": true,
       "paintInvalidations": [
         {
-          "object": "LayoutIFrame (positioned) IFRAME",
+          "object": "LayoutBlockFlow HTML",
           "rect": [0, 0, 800, 800],
           "reason": "forced by layout"
         },
         {
-          "object": "LayoutBlockFlow HTML",
-          "rect": [0, 0, 800, 759],
+          "object": "LayoutIFrame (positioned) IFRAME",
+          "rect": [0, 0, 800, 800],
           "reason": "forced by layout"
         },
         {
@@ -34,19 +34,9 @@
           "reason": "forced by layout"
         },
         {
-          "object": "LayoutBlockFlow H1",
-          "rect": [8, 700, 600, 37],
-          "reason": "bounds change"
-        },
-        {
           "object": "LayoutText #text",
           "rect": [8, 8, 324, 19],
           "reason": "forced by layout"
-        },
-        {
-          "object": "LayoutView #document",
-          "rect": [785, 0, 15, 600],
-          "reason": "scroll"
         }
       ]
     }
@@ -81,24 +71,12 @@
       "reason": "forced by layout"
     },
     {
-      "object": "VerticalScrollbar",
+      "object": "HorizontalScrollbar",
       "reason": "scroll"
     },
     {
       "object": "LayoutBlockFlow HTML",
       "reason": "forced by layout"
-    },
-    {
-      "object": "LayoutBlockFlow H1",
-      "reason": "bounds change"
-    },
-    {
-      "object": "RootInlineBox",
-      "reason": "bounds change"
-    },
-    {
-      "object": "LayoutView #document",
-      "reason": "scroll"
     }
   ]
 }