Dirty line boxes correctly when a float gets layout

third_party/WebKit/LayoutTests/platform/linux/fast/repaint/line-flow-with-floats-6-expected.txt

 {
   "bounds": [800, 600],
   "children": [
     {
       "bounds": [800, 600],
       "contentsOpaque": true,
       "drawsContent": true,
       "paintInvalidations": [
         {
           "object": "LayoutBlockFlow P",
-          "rect": [8, 340, 418, 99],
+          "rect": [8, 320, 418, 79],
           "reason": "invalidate paint rectangle"
         },
         {
           "object": "LayoutBlockFlow (floating) SPAN id='blueFloat'",
           "rect": [14, 363, 48, 65],
           "reason": "forced by layout"
         },
         {
           "object": "LayoutText #text",
           "rect": [28, 363, 20, 20],
           "reason": "layoutObject insertion"
         },
         {
           "object": "InlineTextBox 'The players all played at once without waiting\n'",
           "reason": "full"
         },
         {
-          "object": "InlineTextBox 'a very short time '",
-          "reason": "full"
-        },
-        {
           "object": "InlineTextBox 'difficult game indeed.\n'",
           "reason": "full"
         },
         {
+          "object": "InlineTextBox 'doubled-up\n'",
+          "reason": "full"
+        },
+        {
           "object": "InlineTextBox 'foo'",
           "reason": "layoutObject insertion"
         },
         {
           "object": "InlineTextBox 'for'",
           "reason": "full"
         },
         {
-          "object": "InlineTextBox 'hedgehogs; and in\n'",
-          "reason": "full"
-        },
-        {
           "object": "InlineTextBox 'other parts of\n'",
           "reason": "full"
         },
         {
-          "object": "InlineTextBox 'quarrelling all the while, and fighting for the'",
+          "object": "InlineTextBox 'soldiers were always getting up and walking off to'",
           "reason": "full"
         },
         {
-          "object": "InlineTextBox 'the Queen'",
-          "reason": "full"
-        },
-        {
           "object": "InlineTextBox 'the ground, Alice soon came to the conclusion that it'",
           "reason": "full"
         },
         {
-          "object": "InlineTextBox 'turns,\n'",
-          "reason": "full"
-        },
-        {
           "object": "InlineTextBox 'was a very\n'",
           "reason": "full"
         },
         {
           "object": "RootInlineBox",
           "reason": "full"
         },
         {
           "object": "RootInlineBox",
           "reason": "full"
         },
         {
           "object": "RootInlineBox",
           "reason": "full"
         },
         {
           "object": "RootInlineBox",
           "reason": "full"
         },
         {
           "object": "RootInlineBox",
           "reason": "full"
-        },
-        {
-          "object": "RootInlineBox",
-          "reason": "full"
         }
       ]
     }
   ]
 }