Hide RenderBox::isBox() / RenderText::isText()

Source/core/rendering/line/TrailingObjects.cpp

Index: Source/core/rendering/line/TrailingObjects.cpp
diff --git a/Source/core/rendering/line/TrailingObjects.cpp b/Source/core/rendering/line/TrailingObjects.cpp
index 7d90e9781333b149b2884d2f0d9afe1e8508879c..950642e21f24ab7a5def6144721d28a446e0cd58 100644
--- a/Source/core/rendering/line/TrailingObjects.cpp
+++ b/Source/core/rendering/line/TrailingObjects.cpp
@@ -57,7 +57,6 @@ void TrailingObjects::updateMidpointsForTrailingObjects(LineMidpointState& lineM
             currentMidpoint += 2;
         }
     } else if (!lBreak.object()) {
-        ASSERT(m_whitespace->isText());
         ASSERT(collapseFirstSpace == CollapseFirstSpace);
         // Add a new end midpoint that stops right at the very end.
         unsigned length = m_whitespace->textLength();