Remove Navigation Transitions from Blink.

Source/core/css/CSSDefaultStyleSheets.cpp

Index: Source/core/css/CSSDefaultStyleSheets.cpp
diff --git a/Source/core/css/CSSDefaultStyleSheets.cpp b/Source/core/css/CSSDefaultStyleSheets.cpp
index a3915988c51be8f496f4f97760ceba30dcab0f29..1a7a5653924e54395c4eafd8d9db4cae2c67bfbc 100644
--- a/Source/core/css/CSSDefaultStyleSheets.cpp
+++ b/Source/core/css/CSSDefaultStyleSheets.cpp
@@ -79,7 +79,6 @@ CSSDefaultStyleSheets::CSSDefaultStyleSheets()
     , m_defaultPrintStyle(nullptr)
     , m_defaultViewSourceStyle(nullptr)
     , m_defaultXHTMLMobileProfileStyle(nullptr)
-    , m_defaultTransitionStyle(nullptr)
     , m_defaultStyleSheet(nullptr)
     , m_mobileViewportStyleSheet(nullptr)
     , m_quirksStyleSheet(nullptr)
@@ -115,17 +114,6 @@ RuleSet* CSSDefaultStyleSheets::defaultViewSourceStyle()
     return m_defaultViewSourceStyle.get();
 }
 
-RuleSet* CSSDefaultStyleSheets::defaultTransitionStyle()
-{
-    if (!m_defaultTransitionStyle) {
-        m_defaultTransitionStyle = RuleSet::create();
-        // Loaded stylesheet is leaked on purpose.
-        RefPtrWillBeRawPtr<StyleSheetContents> stylesheet = parseUASheet(loadResourceAsASCIIString("navigationTransitions.css"));
-        m_defaultTransitionStyle->addRulesFromSheet(stylesheet.release().leakRef(), screenEval());
-    }
-    return m_defaultTransitionStyle.get();
-}
-
 RuleSet* CSSDefaultStyleSheets::defaultXHTMLMobileProfileStyle()
 {
     if (!m_defaultXHTMLMobileProfileStyle) {
@@ -197,7 +185,6 @@ DEFINE_TRACE(CSSDefaultStyleSheets)
     visitor->trace(m_defaultPrintStyle);
     visitor->trace(m_defaultViewSourceStyle);
     visitor->trace(m_defaultXHTMLMobileProfileStyle);
-    visitor->trace(m_defaultTransitionStyle);
     visitor->trace(m_defaultStyleSheet);
     visitor->trace(m_mobileViewportStyleSheet);
     visitor->trace(m_quirksStyleSheet);