Remove the compile time flag for DATALIST Element.

Source/core/rendering/RenderTheme.cpp

Index: Source/core/rendering/RenderTheme.cpp
diff --git a/Source/core/rendering/RenderTheme.cpp b/Source/core/rendering/RenderTheme.cpp
index 5f5a0e4994797e61db6de27fb76dcc8febd103e7..6d8b8e2af26d96be46a9e2bcd5f748d4db6df328 100644
--- a/Source/core/rendering/RenderTheme.cpp
+++ b/Source/core/rendering/RenderTheme.cpp
@@ -24,11 +24,17 @@
 
 #include "CSSValueKeywords.h"
 #include "HTMLNames.h"
+#include "RuntimeEnabledFeatures.h"
 #include "core/dom/Document.h"
+#include "core/dom/shadow/ElementShadow.h"
 #include "core/editing/FrameSelection.h"
 #include "core/fileapi/FileList.h"
+#include "core/html/HTMLCollection.h"
+#include "core/html/HTMLDataListElement.h"
 #include "core/html/HTMLInputElement.h"
 #include "core/html/HTMLMeterElement.h"
+#include "core/html/HTMLOptionElement.h"
+#include "core/html/parser/HTMLParserIdioms.h"
 #include "core/html/shadow/MediaControlElements.h"
 #include "core/html/shadow/SpinButtonElement.h"
 #include "core/html/shadow/TextControlInnerElements.h"
@@ -51,14 +57,6 @@
 #include "core/rendering/RenderInputSpeech.h"
 #endif
 
-#if ENABLE(DATALIST_ELEMENT)
-#include "core/dom/shadow/ElementShadow.h"
-#include "core/html/HTMLCollection.h"
-#include "core/html/HTMLDataListElement.h"
-#include "core/html/HTMLOptionElement.h"
-#include "core/html/parser/HTMLParserIdioms.h"
-#endif
-
 // The methods in this file are shared by all themes on every platform.
 
 namespace WebCore {
@@ -455,6 +453,22 @@ bool RenderTheme::paintDecorations(RenderObject* o, const PaintInfo& paintInfo,
     return false;
 }
 
+String RenderTheme::extraDefaultStyleSheet()
+{
+    static String dataListElementCSS = (RuntimeEnabledFeatures::dataListElementEnabled()) ? ASCIILiteral("datalist {display: none ;}") : ASCIILiteral("");
+
+#if ENABLE(INPUT_TYPE_COLOR)
+    StringBuilder inputTypeCSS;

[tkent, 2013/05/22 00:40:38]

This code block should be enabled only if the runtime flag is on.

So, the beginning of this function should be:
  if (!RuntimeEnabledFeature::dataListElementEnabled())
      return String();

+    inputTypeCSS.appendLiteral("input[type=\"color\"][list] { -webkit-appearance: menulist; width: 88px; height: 23px;}");
+    inputTypeCSS.appendLiteral("input[type=\"color\"][list]::-webkit-color-swatch-wrapper { padding-left: 8px; padding-right: 24px;}");
+    inputTypeCSS.appendLiteral("input[type=\"color\"][list]::-webkit-color-swatch { border-color: #000000;}");
+    inputTypeCSS.append(dataListElementCSS);
+    return inputTypeCSS.toString();
+#endif
+
+    return dataListElementCSS;
+}
+
 String RenderTheme::formatMediaControlsTime(float time) const
 {
     if (!std::isfinite(time))
@@ -890,7 +904,6 @@ bool RenderTheme::paintMeter(RenderObject*, const PaintInfo&, const IntRect&)
     return true;
 }
 
-#if ENABLE(DATALIST_ELEMENT)
 LayoutUnit RenderTheme::sliderTickSnappingThreshold() const
 {
     return 0;
@@ -977,7 +990,6 @@ void RenderTheme::paintSliderTicks(RenderObject* o, const PaintInfo& paintInfo,
         paintInfo.context->fillRect(tickRect);
     }
 }
-#endif
 
 double RenderTheme::animationRepeatIntervalForProgressBar(RenderProgress*) const
 {