Account for total glyph overflow in CachingWordShaper::width

third_party/WebKit/LayoutTests/platform/linux/fast/repaint/line-flow-with-floats-9-expected.txt

 {
   "bounds": [800, 600],
   "children": [
     {
       "bounds": [800, 600],
       "contentsOpaque": true,
       "drawsContent": true,
       "repaintRects": [
+        [420, 240, 1, 139],
         [372, 243, 48, 49],
         [8, 80, 418, 519]
       ],
       "paintInvalidationClients": [
         "InlineTextBox 'The chief difficulty Alice found at first was in managing her'",
         "RootInlineBox",
         "InlineTextBox 'flamingo: she succeeded in getting its body tucked away,'",
         "RootInlineBox",
         "InlineTextBox 'comfortably enough, under her arm, with its legs hanging'",
         "RootInlineBox",
@@ skipping 59 matching lines @@
         "InlineTextBox 'happen any'",
         "RootInlineBox",
         "InlineTextBox 'minute, \u2018and then,\u2019 thought she, \u2018what would become of\n'",
         "InlineTextBox 'me?'",
         "RootInlineBox",
         "InlineTextBox 'They\u2019re dreadfully fond of beheading people here; the great'",
         "RootInlineBox",
         "InlineTextBox 'wonder is, that there\u2018s any one left alive!\u2019'",
         "RootInlineBox",
         "LayoutBlockFlow P",
-        "LayoutBlockFlow (floating) SPAN id='yellowFloat'"
+        "LayoutBlockFlow (floating) SPAN id='yellowFloat'",
+        "LayoutText #text",
+        "InlineTextBox 'begin again, it was very provoking to find that the'",
+        "InlineTextBox 'hedgehog had\n'",
+        "InlineTextBox 'unrolled itself, and was in the act of crawling'",
+        "InlineTextBox 'away: besides all\n'",
+        "InlineTextBox 'this, there was generally a ridge or furrow'",
+        "InlineTextBox 'in the way wherever\n'",
+        "InlineTextBox 'she wanted to send the hedgehog to, and, as'",
+        "InlineTextBox 'the doubled-up\n'",
+        "InlineTextBox 'soldiers were always getting up and walking off to'",
+        "InlineTextBox 'other parts of\n'",
+        "InlineTextBox 'the ground, Alice soon came to the conclusion that it'",
+        "InlineTextBox 'was a very\n'"
       ]
     }
   ]
 }