Move focus/blur handling code of HTMLInputElement to InputType

Move focus/blur handling code of HTMLInputElement to InputType
https://bugs.webkit.org/show_bug.cgi?id=76984

Reviewed by Dimitri Glazkov.

No new tests. Just a refactoring.

* html/HTMLInputElement.cpp:
(WebCore::HTMLInputElement::handleFocusEvent):
Move the code to PasswordInputType::handleFocusEvent().
(WebCore::HTMLInputElement::handleBlurEvent):
Move the code to TextFieldInputType::handleBlurEvent() and
PasswordInputType::handleBlurEvent().
* html/InputType.cpp:
(WebCore::InputType::handleFocusEvent):
* html/InputType.h:
(InputType): Add handleFocusEvent().
* html/PasswordInputType.cpp:
(WebCore::PasswordInputType::handleFocusEvent):
Move the code for type=password from HTMLInputElement::handleFocusEvent().
(WebCore::PasswordInputType::handleBlurEvent):
Move the code for tyep=password from HTMLInputElement::handleBlurEvent().
* html/PasswordInputType.h:
(PasswordInputType): Add handleFocusEvent() and handleBlurEvent().
* html/TextFieldInputType.cpp:
(WebCore::TextFieldInputType::handleBlurEvent):
Move the code for text field types from HTMLInputElement::handleBlurEvent().
* html/TextFieldInputType.h:
(TextFieldInputType): Add handleBlurEvent().

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@105937 268f45cc-cd09-0410-ab3c-d52691b4dbfc