[DMC #25] Make DocumentMarker::GetType() virtual

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

Index: third_party/WebKit/Source/core/editing/markers/GrammarMarker.cpp
diff --git a/third_party/WebKit/Source/core/editing/markers/GrammarMarker.cpp b/third_party/WebKit/Source/core/editing/markers/GrammarMarker.cpp
index 32cfbb69a6e82b65065615c2720eee5e132ebb6a..eadeee2f38057493ac189e90173a454964c1c3ad 100644
--- a/third_party/WebKit/Source/core/editing/markers/GrammarMarker.cpp
+++ b/third_party/WebKit/Source/core/editing/markers/GrammarMarker.cpp
@@ -9,11 +9,12 @@ namespace blink {
 GrammarMarker::GrammarMarker(unsigned start_offset,
                              unsigned end_offset,
                              const String& description)
-    : SpellCheckMarker(DocumentMarker::kGrammar,
-                       start_offset,
-                       end_offset,
-                       description) {
+    : SpellCheckMarker(start_offset, end_offset, description) {
   DCHECK_LT(start_offset, end_offset);
 }
 
+DocumentMarker::MarkerType GrammarMarker::GetType() const {
+  return DocumentMarker::kGrammar;
+}
+
 }  // namespace blink