m_start = 0;
m_end = textLength();
if (m_firstLetter) {
+ // FIXME: We should not modify the structure of the render tree during
+ // layout. crbug.com/370458
+ DeprecatedDisableModifyRenderTreeStructureAsserts disabler;
+
ASSERT(!m_contentString);
m_firstLetter->destroy();
m_firstLetter = 0;