WebKit support for computing but not highlighting rects for text matches.

        * WebView/WebHTMLViewPrivate.h:
        added markedTextMatchesAreHighlighted/setMarkedTextMatchesAreHighlighted and
        rectsForTextMatches, and renamed related methods for clarity/consistency
        * WebView/WebHTMLView.m:
        (-[WebHTMLView markAllMatchesForText:caseSensitive:]):
        renamed, calls similarly-renamed method
        (-[WebHTMLView setMarkedTextMatchesAreHighlighted:]):
        new method, calls through to bridge
        (-[WebHTMLView markedTextMatchesAreHighlighted]):
        ditto
        (-[WebHTMLView unmarkAllTextMatches]):
        renamed
        (-[WebHTMLView rectsForTextMatches]):
        new method, calls through to bridge

        * WebView/WebViewPrivate.h:
        added rectsForTextMatches, renamed other methods (and added highlight: parameter)
        * WebView/WebView.m:
        (-[WebView markAllMatchesForText:caseSensitive:highlight:]):
        renamed for clarity/consistency, and now has highlight: parameter, which is passed down
        (-[WebView unmarkAllTextMatches]):
        renamed for clarity/consistency, and calls similarly-renamed method lower down. diff got
        confused with the end of this and the end of the next method.
        (-[WebView rectsForTextMatches]):
        new method, calls through to WebHTMLView as related methods currently do



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@14806 268f45cc-cd09-0410-ab3c-d52691b4dbfc