Split DMLEditor::ShiftMarkers() into content-dependent and -independent versions

third_party/WebKit/Source/core/editing/markers/TextMatchMarkerListImpl.cpp

Index: third_party/WebKit/Source/core/editing/markers/TextMatchMarkerListImpl.cpp
diff --git a/third_party/WebKit/Source/core/editing/markers/TextMatchMarkerListImpl.cpp b/third_party/WebKit/Source/core/editing/markers/TextMatchMarkerListImpl.cpp
index cea15c01f1c4d6a4190d6fa45444eede2de07ada..9eede22c811e6e5cb93eab085b7a61bb4a8c2ffd 100644
--- a/third_party/WebKit/Source/core/editing/markers/TextMatchMarkerListImpl.cpp
+++ b/third_party/WebKit/Source/core/editing/markers/TextMatchMarkerListImpl.cpp
@@ -44,8 +44,8 @@ bool TextMatchMarkerListImpl::RemoveMarkers(unsigned start_offset, int length) {
 bool TextMatchMarkerListImpl::ShiftMarkers(unsigned offset,
                                            unsigned old_length,
                                            unsigned new_length) {
-  return DocumentMarkerListEditor::ShiftMarkers(&markers_, offset, old_length,
-                                                new_length);
+  return DocumentMarkerListEditor::ShiftMarkersContentDependent(
+      &markers_, offset, old_length, new_length);
 }
 
 DEFINE_TRACE(TextMatchMarkerListImpl) {