[blink] Use functions for AllMarkers and MisspellingMarkers

Source/core/dom/DocumentMarker.h

Index: Source/core/dom/DocumentMarker.h
diff --git a/Source/core/dom/DocumentMarker.h b/Source/core/dom/DocumentMarker.h
index f4410fbdc3f30c0942f2cbed661f7736221a7f9e..476d41b316412ad67c1544e6f90ffc4dcdda1a7a 100644
--- a/Source/core/dom/DocumentMarker.h
+++ b/Source/core/dom/DocumentMarker.h
@@ -60,21 +60,8 @@ public:
         unsigned m_mask;
     };
 
-    class AllMarkers : public MarkerTypes {
-    public:
-        AllMarkers()
-            : MarkerTypes(Spelling | Grammar | TextMatch)
-        {
-        }
-    };
-
-    class MisspellingMarkers : public MarkerTypes {
-    public:
-        MisspellingMarkers()
-            : MarkerTypes(Spelling | Grammar)
-        {
-        }
-    };
+    static MarkerTypes allMarkers() { return MarkerTypes(Spelling | Grammar | TextMatch); }
+    static MarkerTypes misspellingMarkers() { return MarkerTypes(Spelling | Grammar); }
 
     DocumentMarker();
     DocumentMarker(MarkerType, unsigned startOffset, unsigned endOffset);