| Index: third_party/WebKit/Source/core/css/CSSDefaultStyleSheets.cpp | 
| diff --git a/third_party/WebKit/Source/core/css/CSSDefaultStyleSheets.cpp b/third_party/WebKit/Source/core/css/CSSDefaultStyleSheets.cpp | 
| index 18ba58984796f5d3acb34b5da28ad571275c78ab..24758d9950625ff98168b1b123620e30210467cd 100644 | 
| --- a/third_party/WebKit/Source/core/css/CSSDefaultStyleSheets.cpp | 
| +++ b/third_party/WebKit/Source/core/css/CSSDefaultStyleSheets.cpp | 
| @@ -165,20 +165,21 @@ void CSSDefaultStyleSheets::ensureDefaultStyleSheetsForElement(const Element& el | 
| changedDefaultStyle = true; | 
| } | 
|  | 
| -    // FIXME: This only works because we Force recalc the entire document so the new sheet | 
| -    // is loaded for <html> and the correct styles apply to everyone. | 
| -    if (!m_fullscreenStyleSheet && Fullscreen::isFullScreen(element.document())) { | 
| -        String fullscreenRules = loadResourceAsASCIIString("fullscreen.css") + LayoutTheme::theme().extraFullScreenStyleSheet(); | 
| -        m_fullscreenStyleSheet = parseUASheet(fullscreenRules); | 
| -        m_defaultStyle->addRulesFromSheet(fullscreenStyleSheet(), screenEval()); | 
| -        m_defaultQuirksStyle->addRulesFromSheet(fullscreenStyleSheet(), screenEval()); | 
| -        changedDefaultStyle = true; | 
| -    } | 
| - | 
| ASSERT(!m_defaultStyle->features().hasIdsInSelectors()); | 
| ASSERT(m_defaultStyle->features().siblingRules.isEmpty()); | 
| } | 
|  | 
| +void CSSDefaultStyleSheets::ensureDefaultStyleSheetForFullscreen() | 
| +{ | 
| +    if (m_fullscreenStyleSheet) | 
| +        return; | 
| + | 
| +    String fullscreenRules = loadResourceAsASCIIString("fullscreen.css") + LayoutTheme::theme().extraFullScreenStyleSheet(); | 
| +    m_fullscreenStyleSheet = parseUASheet(fullscreenRules); | 
| +    m_defaultStyle->addRulesFromSheet(fullscreenStyleSheet(), screenEval()); | 
| +    m_defaultQuirksStyle->addRulesFromSheet(fullscreenStyleSheet(), screenEval()); | 
| +} | 
| + | 
| DEFINE_TRACE(CSSDefaultStyleSheets) | 
| { | 
| visitor->trace(m_defaultStyle); | 
|  |