Reviewed by Darin.

        - http://bugs.webkit.org/show_bug.cgi?id=14626
          Make bidiReorderCharacters independent of RenderBlock

        No layout test possible because there is no change in functionality.

        This patch generalizes RenderBlock's implementation of the Unicode Bidi Algorithm
        in the form of the BidiResolver class template. An instance of a BidiResolver class
        can generate a sequence of runs with corresponding level and override attributes,
        given a range specified by start and end iterators. The iterators can optionally
        call back to the BidiResolver instance to push or pop explicit embedding levels.

        The patch replaces BidiState with a specialization of BidiResolver that uses
        BidiIterators and generates BidiRuns. It also eliminates some of the file statics
        in bidi.cpp, instead relying on BidiResolver data members.

        The patch makes the BidiContext part of BidiStatus, thus making BidiStatus the
        entire state that needs to be saved and restored in order to restart the bidi
        algorithm at a given point. Previously, you had to keep and pass around two
        separate structures, namely the BidiContext and the BidiStatus.

        bidiReorderCharacters is implemented without relying on render objects, using
        a BidiResolver specialization that uses simple character buffer iterators and
        simple run structures.

        * WebCore.pro:
        * WebCore.vcproj/WebCore.vcproj:
        * WebCore.xcodeproj/project.pbxproj:
        * WebCoreSources.bkl:
        * platform/BidiContext.cpp: Added.
        (WebCore::operator==):
        * platform/BidiContext.h: Added.
        (WebCore::BidiContext::BidiContext):
        (WebCore::BidiContext::ref):
        (WebCore::BidiContext::deref):
        (WebCore::BidiContext::parent):
        (WebCore::BidiContext::level):
        (WebCore::BidiContext::dir):
        (WebCore::BidiContext::override):
        * platform/BidiReorderCharacters.cpp: Added.
        (WebCore::CharacterBufferIterator::CharacterBufferIterator):
        (WebCore::CharacterBufferIterator::offset):
        (WebCore::CharacterBufferIterator::increment):
        (WebCore::CharacterBufferIterator::atEnd):
        (WebCore::CharacterBufferIterator::current):
        (WebCore::CharacterBufferIterator::direction):
        (WebCore::CharacterBufferIterator::operator==):
        (WebCore::CharacterBufferIterator::operator!=):
        (WebCore::::appendRun):
        (WebCore::bidiReorderCharacters):
        * platform/BidiReorderCharacters.h: Added.
        * platform/BidiResolver.h: Added.
        (WebCore::BidiStatus::BidiStatus):
        (WebCore::operator==):
        (WebCore::operator!=):
        (WebCore::BidiCharacterRun::BidiCharacterRun):
        (WebCore::BidiCharacterRun::reversed):
        (WebCore::BidiCharacterRun::dirOverride):
        (WebCore::BidiCharacterRun::next):
        (WebCore::BidiResolver::):
        (WebCore::BidiResolver::context):
        (WebCore::BidiResolver::setContext):
        (WebCore::BidiResolver::setLastDir):
        (WebCore::BidiResolver::setLastStrongDir):
        (WebCore::BidiResolver::setEorDir):
        (WebCore::BidiResolver::dir):
        (WebCore::BidiResolver::setDir):
        (WebCore::BidiResolver::status):
        (WebCore::BidiResolver::setStatus):
        (WebCore::BidiResolver::adjustEmbedding):
        (WebCore::BidiResolver::setAdjustEmbedding):
        (WebCore::BidiResolver::firstRun):
        (WebCore::BidiResolver::lastRun):
        (WebCore::BidiResolver::runCount):
        (WebCore::::embed):
        (WebCore::::deleteRuns):
        (WebCore::::reverseRuns):
        (WebCore::::createBidiRunsForLine):
        * platform/win/PopupMenuWin.cpp:
        (WebCore::PopupMenu::paint):
        * rendering/RenderBlock.h:
        * rendering/RenderFileUploadControl.cpp:
        (WebCore::RenderFileUploadControl::paintObject):
        * rendering/RenderListBox.cpp:
        (WebCore::RenderListBox::paintItemForeground):
        * rendering/RootInlineBox.cpp:
        (WebCore::RootInlineBox::childRemoved):
        (WebCore::RootInlineBox::lineBreakBidiStatus):
        (WebCore::RootInlineBox::setLineBreakInfo):
        * rendering/RootInlineBox.h:
        (WebCore::RootInlineBox::RootInlineBox):
        * rendering/bidi.cpp:
        (WebCore::BidiIterator::BidiIterator):
        (WebCore::BidiState::deleteRuns):
        (WebCore::operator==):
        (WebCore::operator!=):
        (WebCore::bidiNext):
        (WebCore::bidiFirst):
        (WebCore::BidiState::addRun):
        (WebCore::appendRunsForObject):
        (WebCore::BidiState::appendRun):
        (WebCore::RenderBlock::constructLine):
        (WebCore::RenderBlock::computeHorizontalPositionsForLine):
        (WebCore::RenderBlock::computeVerticalPositionsForLine):
        (WebCore::RenderBlock::bidiReorderLine):
        (WebCore::buildCompactRuns):
        (WebCore::RenderBlock::layoutInlineChildren):
        (WebCore::RenderBlock::determineStartPosition):
        (WebCore::RenderBlock::determineEndPosition):
        (WebCore::RenderBlock::matchedEndLine):
        (WebCore::RenderBlock::skipWhitespace):
        * rendering/bidi.h:
        (WebCore::BidiRun::BidiRun):
        (WebCore::BidiRun::next):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@24485 268f45cc-cd09-0410-ab3c-d52691b4dbfc