Change RenderObject::style(bool) to accept an enum instead

Source/core/rendering/RenderRubyRun.cpp

Index: Source/core/rendering/RenderRubyRun.cpp
diff --git a/Source/core/rendering/RenderRubyRun.cpp b/Source/core/rendering/RenderRubyRun.cpp
index 4ba77cabb1e042f14adba7bbaa0d5f4e9797c831..e2a89ebb8e14446ebd795628ed613848aa16a523 100644
--- a/Source/core/rendering/RenderRubyRun.cpp
+++ b/Source/core/rendering/RenderRubyRun.cpp
@@ -264,7 +264,7 @@ void RenderRubyRun::layout()
     computeOverflow(clientLogicalBottom());
 }
 
-void RenderRubyRun::getOverhang(bool firstLine, RenderObject* startRenderer, RenderObject* endRenderer, int& startOverhang, int& endOverhang) const
+void RenderRubyRun::getOverhang(bool isFirstLine, RenderObject* startRenderer, RenderObject* endRenderer, int& startOverhang, int& endOverhang) const
 {
     ASSERT(!needsLayout());
 
@@ -280,6 +280,7 @@ void RenderRubyRun::getOverhang(bool firstLine, RenderObject* startRenderer, Ren
     if (!rubyBase->firstRootBox())
         return;
 
+    const OwnOrFirstLineStyle firstLine = isFirstLine ? FirstLineStyle : OwnStyle;
     int logicalWidth = this->logicalWidth();
     int logicalLeftOverhang = std::numeric_limits<int>::max();
     int logicalRightOverhang = std::numeric_limits<int>::max();