Invalidate caret during paint invalidation

third_party/WebKit/LayoutTests/platform/linux/paint/invalidation/caret-invalidation-in-overflow-scroll-expected.txt

 {
   "layers": [
     {
       "name": "LayoutView #document",
       "bounds": [800, 600],
       "contentsOpaque": true,
       "drawsContent": true,
       "paintInvalidations": [
         {
-          "object": "LayoutText #text",
-          "rect": [380, 11, 3, 16],
-          "reason": "invalidate paint rectangle"
+          "object": "LayoutTextControl INPUT id='target'",
+          "rect": [360, 7, 26, 24],

[chrishtr, 2017/01/31 22:51:03]

Is the change of rect because it's now invalidating on the block rather than the
LayoutText?

[Xianzhu, 2017/02/02 23:42:06]

This shows a regression about outline invalidation.
https://codereview.chromium.org/2669003002/ addresses it.

+          "reason": "outline"
         },
         {
-          "object": "LayoutText #text",
-          "rect": [377, 11, 3, 16],
-          "reason": "invalidate paint rectangle"
+          "object": "LayoutBlockFlow DIV id='inner-editor'",
+          "rect": [380, 10, 3, 18],
+          "reason": "caret"
+        },
+        {
+          "object": "LayoutBlockFlow DIV id='inner-editor'",
+          "rect": [377, 10, 3, 18],
+          "reason": "caret"
         }
       ]
     }
   ],
   "objectPaintInvalidations": [
     {
-      "object": "Caret",
-      "reason": "invalidate paint rectangle"
+      "object": "LayoutTextControl INPUT id='target'",
+      "reason": "outline"

[chrishtr, 2017/01/31 22:51:03]

Why this change?

     },
     {
       "object": "Caret",
-      "reason": "invalidate paint rectangle"
+      "reason": "caret"
+    },
+    {
+      "object": "Caret",
+      "reason": "caret"
     }
   ]
 }