Remove the compile time flag for DATALIST Element.

Source/core/rendering/RenderThemeChromiumDefault.cpp

 /*
  * Copyright (C) 2007 Apple Inc.
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2008 Collabora Ltd.
  * Copyright (C) 2008, 2009 Google Inc.
  * Copyright (C) 2009 Kenneth Rohde Christiansen
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #include "config.h"
 #include "core/rendering/RenderThemeChromiumDefault.h"
 
 #include "CSSValueKeywords.h"
+#include "RuntimeEnabledFeatures.h"
 #include "UserAgentStyleSheets.h"
 #include "core/platform/ScrollbarTheme.h"
 #include "core/platform/graphics/Color.h"
 #include "core/platform/graphics/GraphicsContext.h"
 #include "core/platform/graphics/GraphicsContextStateSaver.h"
 #include "core/rendering/PaintInfo.h"
 #include "core/rendering/RenderObject.h"
 #include "core/rendering/RenderProgress.h"
 #include "core/rendering/RenderSlider.h"
 #include <public/default/WebThemeEngine.h>
@@ skipping 57 matching lines @@
 
     if (cssValueId == CSSValueButtonface)
         return defaultButtonGrayColor;
     if (cssValueId == CSSValueMenu)
         return defaultMenuColor;
     return RenderTheme::systemColor(cssValueId);
 }
 
 String RenderThemeChromiumDefault::extraDefaultStyleSheet()
 {
+    static String datalistCss = (RuntimeEnabledFeatures::datalistEnabled()) ?

[tkent, 2013/05/20 21:32:11]

RenderThemeChromiumDefault is used only in Chromium Linux.
We should have this code in RenderTheme.cpp, and existing
extraDefaultStyleSheet() overrides should be like the following:

String RenderThemeChromiumXXX::extraDefaultStyleSheet()
{
    return RenderTheme::extraDefaultStyleSheet() + ....

+        "datalist {display: none ;}" : "";
 #if !OS(WINDOWS)
     return RenderThemeChromiumSkia::extraDefaultStyleSheet() +
-           String(themeChromiumLinuxUserAgentStyleSheet, sizeof(themeChromiumLinuxUserAgentStyleSheet));
+        String(themeChromiumLinuxUserAgentStyleSheet, sizeof(themeChromiumLinuxUserAgentStyleSheet)) +
+        datalistCss;
 #else
-    return RenderThemeChromiumSkia::extraDefaultStyleSheet();
+    return RenderThemeChromiumSkia::extraDefaultStyleSheet() +
+        datalistCss;
 #endif
 }
 
 bool RenderThemeChromiumDefault::controlSupportsTints(const RenderObject* o) const
 {
     return isEnabled(o);
 }
 
 Color RenderThemeChromiumDefault::activeListBoxSelectionBackgroundColor() const
 {
@@ skipping 28 matching lines @@
 Color RenderThemeChromiumDefault::platformActiveSelectionForegroundColor() const
 {
     return m_activeSelectionForegroundColor;
 }
 
 Color RenderThemeChromiumDefault::platformInactiveSelectionForegroundColor() const
 {
     return m_inactiveSelectionForegroundColor;
 }
 
-#if ENABLE(DATALIST_ELEMENT)
 IntSize RenderThemeChromiumDefault::sliderTickSize() const
 {
     return IntSize(1, 6);
 }
 
 int RenderThemeChromiumDefault::sliderTickOffsetFromTrackCenter() const
 {
     return -16;
 }
-#endif
 
 void RenderThemeChromiumDefault::adjustSliderThumbSize(RenderStyle* style, Element* element) const
 {
     IntSize size = WebKit::Platform::current()->themeEngine()->getSize(WebKit::WebThemeEngine::PartSliderThumb);
     float zoomLevel = style->effectiveZoom();
     if (style->appearance() == SliderThumbHorizontalPart) {
         style->setWidth(Length(size.width() * zoomLevel, Fixed));
         style->setHeight(Length(size.height() * zoomLevel, Fixed));
     } else if (style->appearance() == SliderThumbVerticalPart) {
         style->setWidth(Length(size.height() * zoomLevel, Fixed));
@@ skipping 150 matching lines @@
     WebKit::Platform::current()->themeEngine()->paint(canvas, WebKit::WebThemeEngine::PartMenuList, getWebThemeState(this, o), WebKit::WebRect(rect), &extraParams);
     return false;
 }
 
 bool RenderThemeChromiumDefault::paintSliderTrack(RenderObject* o, const PaintInfo& i, const IntRect& rect)
 {
     WebKit::WebThemeEngine::ExtraParams extraParams;
     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);
     IntRect unzoomedRect = rect;
     if (zoomLevel != 1) {
         unzoomedRect.setWidth(unzoomedRect.width() / zoomLevel);
         unzoomedRect.setHeight(unzoomedRect.height() / zoomLevel);
         i.context->translate(unzoomedRect.x(), unzoomedRect.y());
         i.context->scale(FloatSize(zoomLevel, zoomLevel));
         i.context->translate(-unzoomedRect.x(), -unzoomedRect.y());
@@ skipping 65 matching lines @@
     WebKit::Platform::current()->themeEngine()->paint(canvas, WebKit::WebThemeEngine::PartProgressBar, getWebThemeState(this, o), WebKit::WebRect(rect), &extraParams);
     return false;
 }
 
 bool RenderThemeChromiumDefault::shouldOpenPickerWithF4Key() const
 {
     return true;
 }
 
 } // namespace WebCore