WTF::notFound looks too much like a local variable.

Source/core/editing/TextInsertionBaseCommand.h

Index: Source/core/editing/TextInsertionBaseCommand.h
diff --git a/Source/core/editing/TextInsertionBaseCommand.h b/Source/core/editing/TextInsertionBaseCommand.h
index aa10fcf4d4d5470732168bce5b40a29d3b8a5048..6f2f355593831940936eb748f37885daabebe805 100644
--- a/Source/core/editing/TextInsertionBaseCommand.h
+++ b/Source/core/editing/TextInsertionBaseCommand.h
@@ -53,7 +53,7 @@ void forEachLineInString(const String& string, const LineOperation& operation)
 {
     unsigned offset = 0;
     size_t newline;
-    while ((newline = string.find('\n', offset)) != notFound) {
+    while ((newline = string.find('\n', offset)) != kNotFound) {
         operation(offset, newline - offset, false);
         offset = newline + 1;
     }