Reviewed by Dan Bernstein.

        - Add a variant of remove that takes a position and a length.

        * wtf/Vector.h:
        (WTF::Vector::remove):

WebCore:

        Reviewed by Dan Bernstein.

        Make the cleanPath function in CSSStyleSelector more efficient by using
        a Vector<UChar>.

        * css/CSSStyleSelector.cpp:
        (WebCore::cleanPath): Make this function work on a Vector<UChar> instead
        of a String.  Also remove unnecessary reverseFind call that could be acomplished
        with two compares.
        (WebCore::checkPseudoState): Remove reserveCapacity calls now that we are using
        a stack buffer.
        * platform/text/PlatformString.h:
        (WebCore::find): Make this find generic enough that it can be used for
        String::find.
        (WebCore::reverseFind): Implement reverseFind so that it can be used
        for with a UChar* and length.
        * platform/text/StringImpl.cpp:
        (WebCore::StringImpl::find): Use implementation in PlatformString.cpp
        (WebCore::StringImpl::reverseFind): Ditto,



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@30593 268f45cc-cd09-0410-ab3c-d52691b4dbfc