Remove the compile time flag for DATALIST Element.

Source/core/rendering/RenderThemeChromiumDefault.cpp

Index: Source/core/rendering/RenderThemeChromiumDefault.cpp
diff --git a/Source/core/rendering/RenderThemeChromiumDefault.cpp b/Source/core/rendering/RenderThemeChromiumDefault.cpp
index 267f189100b1f8fbe2819c3f44a947ac8774f4e2..8ed6f663a20ee39b6d22aba44a3850086c1a9cfd 100644
--- a/Source/core/rendering/RenderThemeChromiumDefault.cpp
+++ b/Source/core/rendering/RenderThemeChromiumDefault.cpp
@@ -104,10 +104,12 @@ Color RenderThemeChromiumDefault::systemColor(int cssValueId) const
 String RenderThemeChromiumDefault::extraDefaultStyleSheet()
 {
 #if !OS(WINDOWS)
-    return RenderThemeChromiumSkia::extraDefaultStyleSheet() +
-           String(themeChromiumLinuxUserAgentStyleSheet, sizeof(themeChromiumLinuxUserAgentStyleSheet));
+    return RenderTheme::extraDefaultStyleSheet() +
+        RenderThemeChromiumSkia::extraDefaultStyleSheet() +
+        String(themeChromiumLinuxUserAgentStyleSheet, sizeof(themeChromiumLinuxUserAgentStyleSheet));
 #else
-    return RenderThemeChromiumSkia::extraDefaultStyleSheet();
+    return RenderTheme::extraDefaultStyleSheet() +
+        RenderThemeChromiumSkia::extraDefaultStyleSheet();
 #endif
 }
 
@@ -156,7 +158,6 @@ Color RenderThemeChromiumDefault::platformInactiveSelectionForegroundColor() con
     return m_inactiveSelectionForegroundColor;
 }
 
-#if ENABLE(DATALIST_ELEMENT)
 IntSize RenderThemeChromiumDefault::sliderTickSize() const
 {
     return IntSize(1, 6);
@@ -166,7 +167,6 @@ int RenderThemeChromiumDefault::sliderTickOffsetFromTrackCenter() const
 {
     return -16;
 }
-#endif
 
 void RenderThemeChromiumDefault::adjustSliderThumbSize(RenderStyle* style, Element* element) const
 {
@@ -337,9 +337,7 @@ bool RenderThemeChromiumDefault::paintSliderTrack(RenderObject* o, const PaintIn
     WebKit::WebCanvas* canvas = i.context->canvas();
     extraParams.slider.vertical = o->style()->appearance() == SliderVerticalPart;
 
-#if ENABLE(DATALIST_ELEMENT)
     paintSliderTicks(o, i, rect);
-#endif
 
     float zoomLevel = o->style()->effectiveZoom();
     GraphicsContextStateSaver stateSaver(*i.context);