Clear SVGInlineTextBox fragments when the text changes.

Source/core/rendering/svg/SVGInlineTextBox.cpp

 /**
  * Copyright (C) 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 50 matching lines @@
     , m_paintingResource(0)
 {
 }
 
 void SVGInlineTextBox::dirtyLineBoxes()
 {
     InlineTextBox::dirtyLineBoxes();
 
     // Clear the now stale text fragments
     clearTextFragments();
+
+    // And clear any following text fragments as the text on which they
+    // depend may now no longer exist.
+    InlineTextBox* nextBox = nextTextBox();
+    if (nextBox && nextBox->isSVGInlineTextBox())

[leviw_travelin_and_unemployed, 2013/05/14 23:43:41]

Will nextBox ever be anything but an SVGInlineTextBox? The two will share a
RenderObject.

[Stephen Chennney, 2013/05/15 00:46:37]

I agree it is. And it can't really hurt if it isn't (no cast or unsafe
operation) so I'll go ahead and remove that test.

+        nextBox->dirtyLineBoxes();
 }
 
 int SVGInlineTextBox::offsetForPosition(float, bool) const
 {
     // SVG doesn't use the standard offset <-> position selection system, as it's not suitable for SVGs complex needs.
     // vertical text selection, inline boxes spanning multiple lines (contrary to HTML, etc.)
     ASSERT_NOT_REACHED();
     return 0;
 }
 
@@ skipping 639 matching lines @@
                     return true;
              }
         }
     }
     return false;
 }
 
 } // namespace WebCore
 
 #endif