Rename renderer to layoutObject in core/editing.

Source/core/editing/InsertLineBreakCommand.cpp

Index: Source/core/editing/InsertLineBreakCommand.cpp
diff --git a/Source/core/editing/InsertLineBreakCommand.cpp b/Source/core/editing/InsertLineBreakCommand.cpp
index 1a8a0ebe577f743a3ebec7b93068c721a1ceefe4..aae57028e9ee4afe7a6917747e541c0051cdc997 100644
--- a/Source/core/editing/InsertLineBreakCommand.cpp
+++ b/Source/core/editing/InsertLineBreakCommand.cpp
@@ -59,7 +59,7 @@ bool InsertLineBreakCommand::shouldUseBreakElement(const Position& insertionPos)
 {
     // An editing position like [input, 0] actually refers to the position before
     // the input element, and in that case we need to check the input element's
-    // parent's renderer.
+    // parent's layoutObject.
     Position p(insertionPos.parentAnchoredEquivalent());
     return p.deprecatedNode()->layoutObject() && !p.deprecatedNode()->layoutObject()->style()->preserveNewline();
 }