Rework list marker spacing for better web compatibility.

third_party/WebKit/Source/core/layout/LayoutListMarker.h

Index: third_party/WebKit/Source/core/layout/LayoutListMarker.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutListMarker.h b/third_party/WebKit/Source/core/layout/LayoutListMarker.h
index b670812362ea94e0c25ebff080d534835c1fd67e..d96806fa50577480bb4dbe23e02238224fb54052 100644
--- a/third_party/WebKit/Source/core/layout/LayoutListMarker.h
+++ b/third_party/WebKit/Source/core/layout/LayoutListMarker.h
@@ -40,6 +40,16 @@ public:
 
     const String& text() const { return m_text; }
 
+    // A reduced set of list style categories allowing for more concise expression
+    // of list style specific logic.
+    enum ListStyleCategory {
+        NoneListCategory,
+        SymbolListCategory,
+        LanguageListCategory
+    };
+
+    // Returns the list's style as one of a reduced high level categorical set of styles.
+    ListStyleCategory listStyleCategory() const;
     bool isInside() const;
 
     void updateMarginsAndContent();
@@ -83,6 +93,7 @@ private:
     LayoutRect selectionRectForPaintInvalidation(const LayoutBoxModelObject* paintInvalidationContainer) const override;
     bool canBeSelectionLeaf() const override { return true; }
 
+    LayoutUnit getWidthOfTextWithSuffix(UChar* suffix, int suffixLength) const;
     void updateMargins();
     void updateContent();