Apply vertical-align style of <sub> and <sup> to child elements.

third_party/WebKit/Source/core/editing/EditingStyle.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 117 matching lines @@
     void mergeStyleFromRulesForSerialization(Element*);
     void removeStyleFromRulesAndContext(Element*, ContainerNode* context);
     void removePropertiesInElementDefaultStyle(Element*);
     void addAbsolutePositioningFromElement(const Element&);
     void forceInline();
     int legacyFontSize(Document*) const;
 
     float fontSizeDelta() const { return m_fontSizeDelta; }
     bool hasFontSizeDelta() const { return m_fontSizeDelta != NoFontDelta; }
 
-    static EditingStyle* styleAtSelectionStart(const VisibleSelection&, bool shouldUseBackgroundColorInEffect = false);
+    static EditingStyle* styleAtSelectionStart(const VisibleSelection&, bool shouldUseBackgroundColorInEffect = false, MutableStylePropertySet* styleToCheck = nullptr);
     static WritingDirection textDirectionForSelection(const VisibleSelection&, EditingStyle* typingStyle, bool& hasNestedOrMultipleEmbeddings);
     static bool isEmbedOrIsolate(CSSValueID unicodeBidi)
     {
         return unicodeBidi == CSSValueIsolate || unicodeBidi == CSSValueWebkitIsolate || unicodeBidi == CSSValueEmbed;
     }
 
     DECLARE_TRACE();
 
 private:
     EditingStyle();
     EditingStyle(ContainerNode*, PropertiesToInclude);
     EditingStyle(const Position&, PropertiesToInclude);
     explicit EditingStyle(const StylePropertySet*);
     EditingStyle(CSSPropertyID, const String& value);
     void init(Node*, PropertiesToInclude);
     void removeTextFillAndStrokeColorsIfNeeded(const ComputedStyle*);
     void setProperty(CSSPropertyID, const String& value, bool important = false);
     void replaceFontSizeByKeywordIfPossible(const ComputedStyle*, CSSComputedStyleDeclaration*);
     void extractFontSizeDelta();
     TriState triStateOfStyle(CSSStyleDeclaration* styleToCompare, ShouldIgnoreTextOnlyProperties) const;
     bool conflictsWithInlineStyleOfElement(HTMLElement*, EditingStyle* extractedStyle, Vector<CSSPropertyID>* conflictingProperties) const;
     void mergeInlineAndImplicitStyleOfElement(Element*, CSSPropertyOverrideMode, PropertiesToInclude);
     void mergeStyle(const StylePropertySet*, CSSPropertyOverrideMode);
 
     Member<MutableStylePropertySet> m_mutableStyle;
     bool m_isMonospaceFont;
     float m_fontSizeDelta;
+    bool m_isVerticalAlign = false;
 
     friend class HTMLElementEquivalent;
     friend class HTMLAttributeEquivalent;
 };
 
 class StyleChange {
     DISALLOW_NEW();
 public:
     StyleChange()
         : m_applyBold(false)
@@ skipping 53 matching lines @@
     String m_applyFontSize;
 };
 
 // FIXME: Remove these functions or make them non-global to discourage using CSSStyleDeclaration directly.
 CSSValueID getIdentifierValue(CSSStyleDeclaration*, CSSPropertyID);
 CSSValueID getIdentifierValue(StylePropertySet*, CSSPropertyID);
 
 } // namespace blink
 
 #endif // EditingStyle_h