Remove the remaining parts of ignorePendingStylesheets and placeholder styles.

sky/engine/core/editing/InsertLineBreakCommand.cpp

Index: sky/engine/core/editing/InsertLineBreakCommand.cpp
diff --git a/sky/engine/core/editing/InsertLineBreakCommand.cpp b/sky/engine/core/editing/InsertLineBreakCommand.cpp
index 5ba79d5ff6943e4e5c1802b7d47de3269b4b3633..70d4205e5d17be5d7cf047a9fd657124f871a8fa 100644
--- a/sky/engine/core/editing/InsertLineBreakCommand.cpp
+++ b/sky/engine/core/editing/InsertLineBreakCommand.cpp
@@ -101,7 +101,7 @@ void InsertLineBreakCommand::doApply()
         Position endingPosition = firstPositionInNode(textNode);
 
         // Handle whitespace that occurs after the split
-        document().updateLayoutIgnorePendingStylesheets();
+        document().updateLayout();
         if (!endingPosition.isRenderedCharacter()) {
             Position positionBeforeTextNode(positionInParentBeforeNode(*textNode));
             // Clear out all whitespace and insert one non-breaking space