blink: honor renderer caret_blink_interval in non-default themes

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

 /*
  * This file is part of the theme implementation for form controls in WebCore.
  *
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Computer, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 112 matching lines @@
     Color platformTextSearchColor(bool activeMatch) const;
 
     Color focusRingColor() const;
     virtual Color platformFocusRingColor() const { return Color(0, 0, 0); }
     void setCustomFocusRingColor(const Color&);
     static Color tapHighlightColor();
     virtual Color platformTapHighlightColor() const { return LayoutTheme::defaultTapHighlightColor; }
     virtual Color platformDefaultCompositionBackgroundColor() const { return defaultCompositionBackgroundColor; }
     virtual void platformColorsDidChange();
 
-    virtual double caretBlinkInterval() const { return 0.5; }
+    void setCaretBlinkInterval(double);
+    virtual double caretBlinkInterval() const;
 
     // System fonts and colors for CSS.
     virtual void systemFont(CSSValueID systemFontID, FontStyle&, FontWeight&, float& fontSize, AtomicString& fontFamily) const = 0;
     void systemFont(CSSValueID systemFontID, FontDescription&);
     virtual Color systemColor(CSSValueID) const;
 
     // Whether the default system font should have its average character width
     // adjusted to match MS Shell Dlg.
     virtual bool needsHackForTextControlWithFontFamily(const AtomicString&) const { return false; }
 
@@ skipping 91 matching lines @@
     static bool isSpinUpButtonPartHovered(const LayoutObject&);
     static bool isReadOnlyControl(const LayoutObject&);
 
 private:
     // This function is to be implemented in your platform-specific theme implementation to hand back the
     // appropriate platform theme.
     static LayoutTheme& nativeTheme();
 
     Color m_customFocusRingColor;
     bool m_hasCustomFocusRingColor;
+    double m_caretBlinkInterval = 0.5;
 
     // This color is expected to be drawn on a semi-transparent overlay,
     // making it more transparent than its alpha value indicates.
     static const RGBA32 defaultTapHighlightColor = 0x66000000;
 
     static const RGBA32 defaultCompositionBackgroundColor = 0xFFFFDD55;
 
     Theme* m_platformTheme; // The platform-specific theme.
 };
 
 } // namespace blink
 
 #endif // LayoutTheme_h