Rename renderer to layoutObject in core/editing.

Source/core/editing/PlainTextRange.cpp

Index: Source/core/editing/PlainTextRange.cpp
diff --git a/Source/core/editing/PlainTextRange.cpp b/Source/core/editing/PlainTextRange.cpp
index d8db3b4c20af1735a8fa11024fe843a8ba157d2d..c7b11b022b6c97199e41480d98ee55a9fa96f0e0 100644
--- a/Source/core/editing/PlainTextRange.cpp
+++ b/Source/core/editing/PlainTextRange.cpp
@@ -106,7 +106,7 @@ PassRefPtrWillBeRawPtr<Range> PlainTextRange::createRangeFor(const ContainerNode
         if (foundEnd) {
             // FIXME: This is a workaround for the fact that the end of a run
             // is often at the wrong position for emitted '\n's or if the
-            // renderer of the current node is a replaced element.
+            // layoutObject of the current node is a replaced element.
             if (len == 1 && (it.text().characterAt(0) == '\n' || it.isInsideReplacedElement())) {
                 it.advance();
                 if (!it.atEnd()) {