Remove CachedUAStyle::hasAppearance.

As of f885f9b1178fa278beafd201fb92a93af2117d64, this variable is now
pointless, because the existence of a CachedUAStyle is only possible
when 'hasAppearance' is 'true'.

Review URL: https://codereview.chromium.org/639963005

git-svn-id: svn://svn.chromium.org/blink/trunk@183594 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/core/rendering/RenderTheme.cpp

@@ -99,7 +99,7 @@ void RenderTheme::adjustStyle(RenderStyle* style, Element* e, const CachedUAStyl
     else if (style->display() == LIST_ITEM || style->display() == TABLE)
         style->setDisplay(BLOCK);
 
-    if (uaStyle && uaStyle->hasAppearance && isControlStyled(style, uaStyle)) {
+    if (uaStyle && isControlStyled(style, uaStyle)) {
         if (part == MenulistPart) {
             style->setAppearance(MenulistButtonPart);
             part = MenulistButtonPart;

third_party/WebKit/Source/core/rendering/style/CachedUAStyle.h

@@ -37,19 +37,16 @@ public:
         return adoptPtr(new CachedUAStyle(style));
     }
 
-    bool hasAppearance;
     BorderData border;
     FillLayer backgroundLayers;
     StyleColor backgroundColor;
 
 private:
     explicit CachedUAStyle(const RenderStyle* style)
-        : hasAppearance(true)
-        , border(style->border())
+        : border(style->border())
         , backgroundLayers(style->backgroundLayers())
         , backgroundColor(style->backgroundColor())
     {
-        ASSERT(style->hasAppearance());
     }
 };