Mouse press should focus on any types of form controls.

Source/core/html/BaseMultipleFieldsDateAndTimeInputType.cpp

 /*
  * Copyright (C) 2010 Google 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 352 matching lines @@
 }
 
 void BaseMultipleFieldsDateAndTimeInputType::handleFocusEvent(Node* oldFocusedNode, FocusDirection direction)
 {
     DateTimeEditElement* edit = dateTimeEditElement();
     if (!edit || m_isDestroyingShadowSubtree)
         return;
     if (direction == FocusDirectionBackward) {
         if (element()->document()->page())
             element()->document()->page()->focusController()->advanceFocus(direction, 0);
-    } else if (direction == FocusDirectionNone) {
+    } else if (direction == FocusDirectionNone || direction == FocusDirectionMouse) {
         edit->focusByOwner(oldFocusedNode);
     } else
         edit->focusByOwner();
 }
 
 void BaseMultipleFieldsDateAndTimeInputType::forwardEvent(Event* event)
 {
     if (SpinButtonElement* element = spinButtonElement()) {
         element->forwardEvent(event);
         if (event->defaultHandled())
@@ skipping 35 matching lines @@
 {
     DateTimeEditElement* edit = dateTimeEditElement();
     return element()->value().isEmpty() && edit && edit->anyEditableFieldsHaveValues();
 }
 
 bool BaseMultipleFieldsDateAndTimeInputType::isKeyboardFocusable(KeyboardEvent*) const
 {
     return element()->isFocusable();
 }
 
-bool BaseMultipleFieldsDateAndTimeInputType::isMouseFocusable() const
-{
-    return element()->isFocusable();
-}
-
 AtomicString BaseMultipleFieldsDateAndTimeInputType::localeIdentifier() const
 {
     return element()->computeInheritedLanguage();
 }
 
 void BaseMultipleFieldsDateAndTimeInputType::minOrMaxAttributeChanged()
 {
     updateInnerTextValue();
 }
 
@@ skipping 154 matching lines @@
 
     if (element()->isRequired() || !dateTimeEditElement()->anyEditableFieldsHaveValues())
         clearButton->setInlineStyleProperty(CSSPropertyVisibility, CSSValueHidden);
     else
         clearButton->removeInlineStyleProperty(CSSPropertyVisibility);
 }
 
 } // namespace WebCore
 
 #endif