Invalidate first line display item clients when first line style changes

third_party/WebKit/Source/core/layout/LayoutText.cpp

Index: third_party/WebKit/Source/core/layout/LayoutText.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutText.cpp b/third_party/WebKit/Source/core/layout/LayoutText.cpp
index 929cf221dc89a10f06698cbfebe1efc9cfcae7a7..e51ae3ace89d44cc4aae1fdeb7207d47c901bc18 100644
--- a/third_party/WebKit/Source/core/layout/LayoutText.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutText.cpp
@@ -1888,4 +1888,17 @@ void LayoutText::invalidateDisplayItemClients(const LayoutBoxModelObject& paintI
     }
 }
 
+void LayoutText::invalidateDisplayItemClientsOfFirstLine()
+{
+    for (InlineTextBox* box = firstTextBox(); box; box = box->nextTextBox()) {
+        if (!box->isFirstLineStyle())
+            break;
+        invalidateDisplayItemClient(*box);
+        if (box->truncation() != cNoTruncation) {
+            if (EllipsisBox* ellipsisBox = box->root().ellipsisBox())
+                invalidateDisplayItemClient(*ellipsisBox);
+        }
+    }
+}
+
 } // namespace blink