Dirty line boxes correctly when a float gets layout

third_party/WebKit/LayoutTests/platform/linux/fast/repaint/line-flow-with-floats-3-expected.txt

 {
   "bounds": [800, 600],
   "children": [
     {
       "bounds": [800, 600],
       "contentsOpaque": true,
       "drawsContent": true,
       "paintInvalidations": [
         {
           "object": "LayoutBlockFlow P",
-          "rect": [8, 380, 418, 219],
+          "rect": [8, 340, 418, 259],
           "reason": "invalidate paint rectangle"
         },
         {
           "object": "LayoutText #text",
           "rect": [14, 420, 339, 39],
           "reason": "bounds change"
         },
         {
           "object": "LayoutText #text",
           "rect": [65, 380, 304, 59],
@@ skipping 53 matching lines @@
         },
         {
           "object": "InlineTextBox 'about, and shouting \u2018Off with his head!\u2019 or \u2018Off with\n'",
           "reason": "incremental"
         },
         {
           "object": "InlineTextBox 'any dispute with the Queen, but she knew that it might\n'",
           "reason": "full"
         },
         {
+          "object": "InlineTextBox 'difficult game indeed.\n'",
+          "reason": "full"
+        },
+        {
           "object": "InlineTextBox 'for the hedgehogs; and in\n'",
           "reason": "bounds change"
         },
         {
           "object": "InlineTextBox 'for turns,\n'",
           "reason": "bounds change"
         },
         {
           "object": "InlineTextBox 'for'",
           "reason": "full"
@@ skipping 24 matching lines @@
         },
         {
           "object": "InlineTextBox 'minute, \u2018and then,\u2019 thought she, \u2018what would become of\n'",
           "reason": "full"
         },
         {
           "object": "InlineTextBox 'once in a minute.\n'",
           "reason": "full"
         },
         {
+          "object": "InlineTextBox 'other parts of\n'",
+          "reason": "full"
+        },
+        {
           "object": "InlineTextBox 'quarrelling all the while, and fighting for the'",
           "reason": "full"
         },
         {
           "object": "InlineTextBox 'quarrelling all the while, and fighting'",
           "reason": "bounds change"
         },
         {
           "object": "InlineTextBox 'shouting \u2018Off with his head!\u2019 or \u2018Off with\n'",
           "reason": "full"
         },
         {
           "object": "InlineTextBox 'stamping about, and'",
           "reason": "full"
         },
         {
           "object": "InlineTextBox 'stamping'",
           "reason": "incremental"
         },
         {
           "object": "InlineTextBox 'the Queen'",
           "reason": "full"
         },
         {
+          "object": "InlineTextBox 'the ground, Alice soon came to the conclusion that it'",
+          "reason": "full"
+        },
+        {
           "object": "InlineTextBox 'the'",
           "reason": "bounds change"
         },
         {
           "object": "InlineTextBox 'turns,\n'",
           "reason": "full"
         },
         {
+          "object": "InlineTextBox 'was a very\n'",
+          "reason": "full"
+        },
+        {
           "object": "InlineTextBox 'was in a furious passion, and went\n'",
           "reason": "full"
         },
         {
           "object": "InlineTextBox 'wonder is, that there\u2018s any one left alive!\u2019'",
           "reason": "full"
         },
         {
           "object": "InlineTextBox 'yet had'",
           "reason": "full"
@@ skipping 34 matching lines @@
           "object": "RootInlineBox",
           "reason": "full"
         },
         {
           "object": "RootInlineBox",
           "reason": "full"
         },
         {
           "object": "RootInlineBox",
           "reason": "full"
+        },
+        {
+          "object": "RootInlineBox",
+          "reason": "full"
+        },
+        {
+          "object": "RootInlineBox",
+          "reason": "full"
         }
       ]
     }
   ]
 }