Reviewed by Adam Roben and John Sullivan.

    Reviewed by Adam Roben and John Sullivan.

        - make the recent searches popup extend only along the straight part of
          the search field (unless it needs to be wider).

        * platform/PopupMenuClient.h:
          Added clientInsetLeft() and clientInsetRight() for clients to
          specify desired horizontal insets for the menu.
        * platform/win/PopupMenuWin.cpp:
        (WebCore::PopupMenu::calculatePositionAndSize):
        (WebCore::PopupMenu::paint):
        * rendering/RenderMenuList.cpp:
        (WebCore::RenderMenuList::clientInsetLeft): Added. Returns 0.
        (WebCore::RenderMenuList::clientInsetRight): Ditto.
        * rendering/RenderMenuList.h:
        * rendering/RenderTextControl.cpp:
        (WebCore::RenderTextControl::clientInsetLeft): Added. Returns half the
        control's height, which is the radius of the cap on the left.
        (WebCore::RenderTextControl::clientInsetRight): Added.
        * rendering/RenderTextControl.h:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@28224 268f45cc-cd09-0410-ab3c-d52691b4dbfc