Remove newMediaPlaybackUi flag from content/ and Blink.

third_party/WebKit/Source/core/css/CSSDefaultStyleSheets.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
@@ skipping 132 matching lines @@
     m_mathmlStyleSheet = parseUASheet(loadResourceAsASCIIString("mathml.css"));
     m_defaultStyle->addRulesFromSheet(mathmlStyleSheet(), screenEval());
     m_defaultPrintStyle->addRulesFromSheet(mathmlStyleSheet(), printEval());
     changedDefaultStyle = true;
   }
 
   // FIXME: We should assert that this sheet only contains rules for <video> and
   // <audio>.
   if (!m_mediaControlsStyleSheet &&
       (isHTMLVideoElement(element) || isHTMLAudioElement(element))) {
-    String mediaRules = loadResourceAsASCIIString(
-                            RuntimeEnabledFeatures::newMediaPlaybackUiEnabled()
-                                ? "mediaControlsNew.css"
-                                : "mediaControls.css") +
+    String mediaRules = loadResourceAsASCIIString("mediaControlsNew.css") +
                         LayoutTheme::theme().extraMediaControlsStyleSheet();
     m_mediaControlsStyleSheet = parseUASheet(mediaRules);
     m_defaultStyle->addRulesFromSheet(mediaControlsStyleSheet(), screenEval());
     m_defaultPrintStyle->addRulesFromSheet(mediaControlsStyleSheet(),
                                            printEval());
     changedDefaultStyle = true;
   }
 
   ASSERT(!m_defaultStyle->features().hasIdsInSelectors());
   ASSERT(m_defaultStyle->features().siblingRules.isEmpty());
@@ skipping 20 matching lines @@
   visitor->trace(m_televisionViewportStyleSheet);
   visitor->trace(m_xhtmlMobileProfileStyleSheet);
   visitor->trace(m_quirksStyleSheet);
   visitor->trace(m_svgStyleSheet);
   visitor->trace(m_mathmlStyleSheet);
   visitor->trace(m_mediaControlsStyleSheet);
   visitor->trace(m_fullscreenStyleSheet);
 }
 
 }  // namespace blink