Mouse press should focus on any types of form controls.

Source/WebCore/html/HTMLInputElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
  *
  * 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
@@ skipping 236 matching lines @@
     HTMLDataListElement* dataList() const;
     void listAttributeTargetChanged();
 #endif
 
     HTMLInputElement* checkedRadioButtonForGroup() const;
     bool isInRequiredRadioButtonGroup();
 
     // Functions for InputType classes.
     void setValueInternal(const String&, TextFieldEventBehavior);
     bool isTextFormControlKeyboardFocusable(KeyboardEvent*) const;
-    bool isTextFormControlMouseFocusable() const;
     bool valueAttributeWasUpdatedAfterParsing() const { return m_valueAttributeWasUpdatedAfterParsing; }
 
     void cacheSelectionInResponseToSetValue(int caretOffset) { cacheSelection(caretOffset, caretOffset, SelectionHasNoDirection); }
 
 #if ENABLE(INPUT_TYPE_COLOR)
     // For test purposes.
     void selectColorInColorChooser(const Color&);
 #endif
 
     String defaultToolTip() const;
@@ skipping 45 matching lines @@
     virtual void didAddUserAgentShadowRoot(ShadowRoot*) OVERRIDE;
 
     virtual void willChangeForm() OVERRIDE;
     virtual void didChangeForm() OVERRIDE;
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
     virtual void removedFrom(ContainerNode*) OVERRIDE;
     virtual void didMoveToNewDocument(Document* oldDocument) OVERRIDE;
 
     virtual bool hasCustomFocusLogic() const OVERRIDE;
     virtual bool isKeyboardFocusable(KeyboardEvent*) const;
-    virtual bool isMouseFocusable() const;
     virtual bool isEnumeratable() const;
     virtual bool supportLabels() const OVERRIDE;
     virtual void updateFocusAppearance(bool restorePreviousSelection);
     virtual bool shouldUseInputMethod();
 
     virtual bool isTextFormControl() const { return isTextField(); }
 
     virtual bool canTriggerImplicitSubmission() const { return isTextField(); }
 
     virtual const AtomicString& formControlType() const;
@@ skipping 99 matching lines @@
     // that it lives as long as its owning element lives. If we move the loader into
     // the ImageInput object we may delete the loader while this element lives on.
     OwnPtr<HTMLImageLoader> m_imageLoader;
 #if ENABLE(DATALIST_ELEMENT)
     OwnPtr<ListAttributeTargetObserver> m_listAttributeTargetObserver;
 #endif
 };
 
 } //namespace
 #endif