Remove CSS clients of ImageResource

sky/engine/core/css/CSSImageSetValue.cpp

Index: sky/engine/core/css/CSSImageSetValue.cpp
diff --git a/sky/engine/core/css/CSSImageSetValue.cpp b/sky/engine/core/css/CSSImageSetValue.cpp
deleted file mode 100644
index d221880d8c0c370a4ee0f2ab6d3d6b14f0501020..0000000000000000000000000000000000000000
--- a/sky/engine/core/css/CSSImageSetValue.cpp
+++ /dev/null
@@ -1,179 +0,0 @@
-/*
- * Copyright (C) 2012 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "sky/engine/core/css/CSSImageSetValue.h"
-
-#include "gen/sky/core/FetchInitiatorTypeNames.h"
-#include "sky/engine/core/css/CSSImageValue.h"
-#include "sky/engine/core/css/CSSPrimitiveValue.h"
-#include "sky/engine/core/dom/Document.h"
-#include "sky/engine/core/fetch/FetchRequest.h"
-#include "sky/engine/core/fetch/ImageResource.h"
-#include "sky/engine/core/fetch/ResourceFetcher.h"
-#include "sky/engine/core/rendering/style/StyleFetchedImageSet.h"
-#include "sky/engine/core/rendering/style/StylePendingImage.h"
-#include "sky/engine/wtf/text/StringBuilder.h"
-
-namespace blink {
-
-CSSImageSetValue::CSSImageSetValue()
-    : CSSValueList(ImageSetClass, CommaSeparator)
-    , m_accessedBestFitImage(false)
-    , m_scaleFactor(1)
-{
-}
-
-CSSImageSetValue::~CSSImageSetValue()
-{
-    if (m_imageSet && m_imageSet->isImageResourceSet())
-        toStyleFetchedImageSet(m_imageSet)->clearImageSetValue();
-}
-
-void CSSImageSetValue::fillImageSet()
-{
-    size_t length = this->length();
-    size_t i = 0;
-    while (i < length) {
-        CSSImageValue* imageValue = toCSSImageValue(item(i));
-        String imageURL = imageValue->url();
-
-        ++i;
-        ASSERT_WITH_SECURITY_IMPLICATION(i < length);
-        CSSValue* scaleFactorValue = item(i);
-        float scaleFactor = toCSSPrimitiveValue(scaleFactorValue)->getFloatValue();
-
-        ImageWithScale image;
-        image.imageURL = imageURL;
-        image.referrer = imageValue->referrer();
-        image.scaleFactor = scaleFactor;
-        m_imagesInSet.append(image);
-        ++i;
-    }
-
-    // Sort the images so that they are stored in order from lowest resolution to highest.
-    std::sort(m_imagesInSet.begin(), m_imagesInSet.end(), CSSImageSetValue::compareByScaleFactor);
-}
-
-CSSImageSetValue::ImageWithScale CSSImageSetValue::bestImageForScaleFactor()
-{
-    ImageWithScale image;
-    size_t numberOfImages = m_imagesInSet.size();
-    for (size_t i = 0; i < numberOfImages; ++i) {
-        image = m_imagesInSet.at(i);
-        if (image.scaleFactor >= m_scaleFactor)
-            return image;
-    }
-    return image;
-}
-
-StyleFetchedImageSet* CSSImageSetValue::cachedImageSet(ResourceFetcher* loader, float deviceScaleFactor, const ResourceLoaderOptions& options)
-{
-    ASSERT(loader);
-
-    m_scaleFactor = deviceScaleFactor;
-
-    if (!m_imagesInSet.size())
-        fillImageSet();
-
-    if (!m_accessedBestFitImage) {
-        ImageWithScale image = bestImageForScaleFactor();
-        if (Document* document = loader->document()) {
-            FetchRequest request(ResourceRequest(document->completeURL(image.imageURL)), FetchInitiatorTypeNames::css, options);
-            request.mutableResourceRequest().setHTTPReferrer(image.referrer);
-
-            if (ResourcePtr<ImageResource> cachedImage = loader->fetchImage(request)) {
-                m_imageSet = StyleFetchedImageSet::create(cachedImage.get(), image.scaleFactor, this);
-                m_accessedBestFitImage = true;
-            }
-        }
-    }
-
-    return (m_imageSet && m_imageSet->isImageResourceSet()) ? toStyleFetchedImageSet(m_imageSet) : 0;
-}
-
-StyleFetchedImageSet* CSSImageSetValue::cachedImageSet(ResourceFetcher* fetcher, float deviceScaleFactor)
-{
-    return cachedImageSet(fetcher, deviceScaleFactor, ResourceFetcher::defaultResourceOptions());
-}
-
-StyleImage* CSSImageSetValue::cachedOrPendingImageSet(float deviceScaleFactor)
-{
-    if (!m_imageSet) {
-        m_imageSet = StylePendingImage::create(this);
-    } else if (!m_imageSet->isPendingImage()) {
-        // If the deviceScaleFactor has changed, we may not have the best image loaded, so we have to re-assess.
-        if (deviceScaleFactor != m_scaleFactor) {
-            m_accessedBestFitImage = false;
-            m_imageSet = StylePendingImage::create(this);
-        }
-    }
-
-    return m_imageSet.get();
-}
-
-String CSSImageSetValue::customCSSText() const
-{
-    StringBuilder result;
-    result.append("-webkit-image-set(");
-
-    size_t length = this->length();
-    size_t i = 0;
-    while (i < length) {
-        if (i > 0)
-            result.appendLiteral(", ");
-
-        const CSSValue* imageValue = item(i);
-        result.append(imageValue->cssText());
-        result.append(' ');
-
-        ++i;
-        ASSERT_WITH_SECURITY_IMPLICATION(i < length);
-        const CSSValue* scaleFactorValue = item(i);
-        result.append(scaleFactorValue->cssText());
-        // FIXME: Eventually the scale factor should contain it's own unit http://wkb.ug/100120.
-        // For now 'x' is hard-coded in the parser, so we hard-code it here too.
-        result.append('x');
-
-        ++i;
-    }
-
-    result.append(')');
-    return result.toString();
-}
-
-CSSImageSetValue::CSSImageSetValue(const CSSImageSetValue& cloneFrom)
-    : CSSValueList(cloneFrom)
-    , m_accessedBestFitImage(false)
-    , m_scaleFactor(1)
-{
-    // Non-CSSValueList data is not accessible through CSS OM, no need to clone.
-}
-
-PassRefPtr<CSSImageSetValue> CSSImageSetValue::cloneForCSSOM() const
-{
-    return adoptRef(new CSSImageSetValue(*this));
-}
-
-} // namespace blink