https://bugs.webkit.org/show_bug.cgi?id=71308

Reviewed by Darin Adler.

Switch PopupMenuClient and rendering classes implementing it to layout
type abstraction.

No new tests.

* platform/PopupMenuClient.h:
* rendering/RenderListBox.cpp:
(WebCore::RenderListBox::listIndexAtOffset):
(WebCore::RenderListBox::panScroll):
(WebCore::RenderListBox::scrollToward):
(WebCore::RenderListBox::scrollSize):
(WebCore::RenderListBox::scrollPosition):
(WebCore::RenderListBox::setScrollOffset):
(WebCore::RenderListBox::verticalScrollbarWidth):
Revert scroll positions and scroll offsets to ints to align with device
pixels.

* rendering/RenderListBox.h:
* rendering/RenderMenuList.cpp:
(WebCore::RenderMenuList::showPopup):
(WebCore::RenderMenuList::clientPaddingLeft):
(WebCore::RenderMenuList::clientPaddingRight):
* rendering/RenderMenuList.h:
* rendering/RenderTextControl.cpp:
(WebCore::RenderTextControl::hitInnerTextElement):
* rendering/RenderTextControlSingleLine.cpp:
(WebCore::RenderTextControlSingleLine::clientPaddingLeft):
(WebCore::RenderTextControlSingleLine::clientPaddingRight):
* rendering/RenderTextControlSingleLine.h:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@99016 268f45cc-cd09-0410-ab3c-d52691b4dbfc