Clear SVGInlineTextBox fragments when the text changes.

Source/core/rendering/svg/SVGInlineTextBox.cpp

Index: Source/core/rendering/svg/SVGInlineTextBox.cpp
diff --git a/Source/core/rendering/svg/SVGInlineTextBox.cpp b/Source/core/rendering/svg/SVGInlineTextBox.cpp
index 685fa18419dd2de509fbb0300a94e1c681e188cb..044faf0e897db258e2987301d2c594926568ffa2 100644
--- a/Source/core/rendering/svg/SVGInlineTextBox.cpp
+++ b/Source/core/rendering/svg/SVGInlineTextBox.cpp
@@ -68,6 +68,12 @@ void SVGInlineTextBox::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