Mouse press should focus on any types of form controls.

Source/core/rendering/RenderTheme.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 101 matching lines @@
     virtual void adjustRepaintRect(const RenderObject*, IntRect&);
 
     // This method is called whenever a relevant state changes on a particular themed object, e.g., the mouse becomes pressed
     // or a control becomes disabled.
     virtual bool stateChanged(RenderObject*, ControlState) const;
 
     // This method is called whenever the theme changes on the system in order to flush cached resources from the
     // old theme.
     virtual void themeChanged() { }
 
-    // A method asking if the theme is able to draw the focus ring.
-    virtual bool supportsFocusRing(const RenderStyle*) const;
+    bool shouldDrawDefaultFocusRing(RenderObject*) const;
 
     // A method asking if the theme's controls actually care about redrawing when hovered.
     virtual bool supportsHover(const RenderStyle*) const { return false; }
 
     // A method asking if the platform is able to show datalist suggestions for a given input type.
     virtual bool supportsDataListUI(const AtomicString&) const;
 
 #if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
     // A method asking if the platform is able to show a calendar picker for a given input type.
     virtual bool supportsCalendarPicker(const AtomicString&) const;
@@ skipping 91 matching lines @@
     virtual Color platformActiveSelectionBackgroundColor() const;
     virtual Color platformInactiveSelectionBackgroundColor() const;
     virtual Color platformActiveSelectionForegroundColor() const;
     virtual Color platformInactiveSelectionForegroundColor() const;
 
     virtual Color platformActiveListBoxSelectionBackgroundColor() const;
     virtual Color platformInactiveListBoxSelectionBackgroundColor() const;
     virtual Color platformActiveListBoxSelectionForegroundColor() const;
     virtual Color platformInactiveListBoxSelectionForegroundColor() const;
 
+    // A method asking if the theme is able to draw the focus ring.
+    virtual bool supportsFocusRing(const RenderStyle*) const;
     virtual bool supportsSelectionForegroundColors() const { return true; }
     virtual bool supportsListBoxSelectionForegroundColors() const { return true; }
 
 #if !USE(NEW_THEME)
     // Methods for each appearance value.
     virtual void adjustCheckboxStyle(StyleResolver*, RenderStyle*, Element*) const;
     virtual bool paintCheckbox(RenderObject*, const PaintInfo&, const IntRect&) { return true; }
     virtual void setCheckboxSize(RenderStyle*) const { }
 
     virtual void adjustRadioStyle(StyleResolver*, RenderStyle*, Element*) const;
@@ skipping 108 matching lines @@
     static const RGBA32 defaultTapHighlightColor = 0x66000000;
 
 #if USE(NEW_THEME)
     Theme* m_theme; // The platform-specific theme.
 #endif
 };
 
 } // namespace WebCore
 
 #endif // RenderTheme_h