Change CSSToStyleMap functions to take const CSSValue&s

third_party/WebKit/Source/core/css/CSSImageValue.h

Index: third_party/WebKit/Source/core/css/CSSImageValue.h
diff --git a/third_party/WebKit/Source/core/css/CSSImageValue.h b/third_party/WebKit/Source/core/css/CSSImageValue.h
index f3f827cf8dfb91c62cf5c422bb24d2d82fc02170..b5e915a35771acb61d67070621b1472e338c6f68 100644
--- a/third_party/WebKit/Source/core/css/CSSImageValue.h
+++ b/third_party/WebKit/Source/core/css/CSSImageValue.h
@@ -51,16 +51,16 @@ public:
     ~CSSImageValue();
 
     bool isCachePending() const { return m_isCachePending; }
-    StyleFetchedImage* cachedImage() { ASSERT(!isCachePending()); return m_cachedImage.get(); }
-    StyleFetchedImage* cacheImage(Document*, const ResourceLoaderOptions&);
-    StyleFetchedImage* cacheImage(Document* document) { return cacheImage(document, ResourceFetcher::defaultResourceOptions()); }
+    StyleFetchedImage* cachedImage() const { ASSERT(!isCachePending()); return m_cachedImage.get(); }
+    StyleFetchedImage* cacheImage(Document*, const ResourceLoaderOptions&) const;
+    StyleFetchedImage* cacheImage(Document* document) const { return cacheImage(document, ResourceFetcher::defaultResourceOptions()); }
 
-    const String& url() { return m_absoluteURL; }
+    const String& url() const { return m_absoluteURL; }
 
     void setReferrer(const Referrer& referrer) { m_referrer = referrer; }
     const Referrer& referrer() const { return m_referrer; }
 
-    void reResolveURL(const Document&);
+    void reResolveURL(const Document&) const;
 
     String customCSSText() const;
 
@@ -70,7 +70,7 @@ public:
 
     bool knownToBeOpaque(const LayoutObject*) const;
 
-    PassRefPtrWillBeRawPtr<CSSImageValue> valueWithURLMadeAbsolute()
+    PassRefPtrWillBeRawPtr<CSSImageValue> valueWithURLMadeAbsolute() const
     {
         return create(KURL(ParsedURLString, m_absoluteURL), m_cachedImage.get());
     }
@@ -78,16 +78,16 @@ public:
     void setInitiator(const AtomicString& name) { m_initiatorName = name; }
 
     DECLARE_TRACE_AFTER_DISPATCH();
-    void restoreCachedResourceIfNeeded(Document&);
+    void restoreCachedResourceIfNeeded(Document&) const;
 
 private:
     CSSImageValue(const AtomicString& rawValue, const KURL&, StyleFetchedImage*);
 
     AtomicString m_relativeURL;
-    AtomicString m_absoluteURL;
+    mutable AtomicString m_absoluteURL;
     Referrer m_referrer;
-    bool m_isCachePending;
-    RefPtrWillBeMember<StyleFetchedImage> m_cachedImage;
+    mutable bool m_isCachePending;
+    mutable RefPtrWillBeMember<StyleFetchedImage> m_cachedImage;
     AtomicString m_initiatorName;
 };