Have Document::mediaQueryMatcher() / Document::selectorQueryCache() return references

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index 351aca1e2be56489022c03087edadba8c005805c..4c5e2a32036df9ad187bb7d8b0dffbedc9b399b0 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -625,18 +625,18 @@ void Document::dispose()
     lifecycleNotifier()->notifyDocumentWasDisposed();
 }
 
-SelectorQueryCache* Document::selectorQueryCache()
+SelectorQueryCache& Document::selectorQueryCache()
 {
     if (!m_selectorQueryCache)
         m_selectorQueryCache = adoptPtr(new SelectorQueryCache());
-    return m_selectorQueryCache.get();
+    return *m_selectorQueryCache;
 }
 
-MediaQueryMatcher* Document::mediaQueryMatcher()
+MediaQueryMatcher& Document::mediaQueryMatcher()
 {
     if (!m_mediaQueryMatcher)
         m_mediaQueryMatcher = MediaQueryMatcher::create(this);
-    return m_mediaQueryMatcher.get();
+    return *m_mediaQueryMatcher;
 }
 
 void Document::setCompatibilityMode(CompatibilityMode mode)
@@ -645,7 +645,7 @@ void Document::setCompatibilityMode(CompatibilityMode mode)
         return;
     bool wasInQuirksMode = inQuirksMode();
     m_compatibilityMode = mode;
-    selectorQueryCache()->invalidate();
+    selectorQueryCache().invalidate();
     if (inQuirksMode() != wasInQuirksMode) {
         // All user stylesheets have to reparse using the different mode.
         m_styleEngine->clearPageUserSheet();
@@ -2638,7 +2638,7 @@ void Document::updateBaseURL()
         // FIXME: Now that we don't support Objective-C this can probably be removed.
         m_baseURL = KURL(ParsedURLString, documentURI());
     }
-    selectorQueryCache()->invalidate();
+    selectorQueryCache().invalidate();
 
     if (!m_baseURL.isValid())
         m_baseURL = KURL();