Cleanup TextPainter

Cleanup TextPainter
https://bugs.webkit.org/show_bug.cgi?id=175782

Reviewed by Myles C. Maxfield.

Remove redundant mention of "text" in the name of TextPainter member functions, add separate
setters for selection and non-selection shadows, and do some other minor cleanups.

* rendering/InlineTextBox.cpp:
(WebCore::InlineTextBox::paint): Update code for renamed functions.
* rendering/SimpleLineLayoutFunctions.cpp:
(WebCore::SimpleLineLayout::paintFlow): Ditto.
* rendering/TextPainter.cpp: Include ShadowData.h.
(WebCore::ShadowApplier::ShadowApplier): Use C++11 brace-initialization syntax.
(WebCore::ShadowApplier::isLastShadowIteration): Moved from TextPainter.h.
(WebCore::ShadowApplier::shadowIsCompletelyCoveredByText): Ditto.
(WebCore::TextPainter::paintTextOrEmphasisMarks): Renamed; formerly named drawTextOrEmphasisMarks.
(WebCore::TextPainter::paintTextWithShadows): Update code for renamed functions.
(WebCore::TextPainter::paintRange): Renamed; formerly named paintTextInRange.
(WebCore::TextPainter::paint): Renamed; formerly named paintText.
(WebCore::TextPainter::drawTextOrEmphasisMarks): Renamed to paintTextOrEmphasisMarks() to match
the naming convention of all the other paint functions in this class.
(WebCore::TextPainter::paintTextInRange): Renamed to paintRange.
(WebCore::TextPainter::paintText): Renamed to paint.
* rendering/TextPainter.h: Forward declare ShadowData.
(WebCore::TextPainter::setStyle): Renamed; formerly named setTextPaintStyle.
(WebCore::TextPainter::setSelectionStyle): Renamed; formerly named setSelectionPaintStyle.
(WebCore::TextPainter::setShadow): Added.
(WebCore::TextPainter::setSelectionShadow): Added.
(WebCore::TextPainter::setEmphasisMark): Renamed; formerly named addEmphasis.
(WebCore::TextPainter::setTextPaintStyle): Renamed to setStyle.
(WebCore::TextPainter::setSelectionPaintStyle): Renamed to setSelectionStyle.
(WebCore::TextPainter::addEmphasis): Renamed to setEmphasisMark.
(WebCore::TextPainter::addTextShadow): Split functionality into setShadow and setSelectionShadow.
(WebCore::ShadowApplier::isLastShadowIteration): Moved to TextPainter.cpp.
(WebCore::ShadowApplier::shadowIsCompletelyCoveredByText): Ditto.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@220988 268f45cc-cd09-0410-ab3c-d52691b4dbfc