Revert "A sizes attribute parser" (https://codereview.chromium.org/224733011)

Source/core/html/HTMLImageElement.cpp

Index: Source/core/html/HTMLImageElement.cpp
diff --git a/Source/core/html/HTMLImageElement.cpp b/Source/core/html/HTMLImageElement.cpp
index 4e956488c610feeca11cdd99aadf8c1ee0468d28..205e0bad15aaee7c3d0ede62c4664317799e9b9a 100644
--- a/Source/core/html/HTMLImageElement.cpp
+++ b/Source/core/html/HTMLImageElement.cpp
@@ -27,8 +27,6 @@
 #include "HTMLNames.h"
 #include "RuntimeEnabledFeatures.h"
 #include "bindings/v8/ScriptEventListener.h"
-#include "core/css/MediaValuesDynamic.h"
-#include "core/css/parser/SizesAttributeParser.h"
 #include "core/dom/Attribute.h"
 #include "core/fetch/ImageResource.h"
 #include "core/html/HTMLAnchorElement.h"
@@ -51,7 +49,6 @@ HTMLImageElement::HTMLImageElement(Document& document, HTMLFormElement* form)
     , m_compositeOperator(CompositeSourceOver)
     , m_imageDevicePixelRatio(1.0f)
     , m_formWasSetByParser(false)
-    , m_effectiveSize(0)
 {
     ScriptWrappable::init(this);
     if (form && form->inDocument()) {
@@ -166,8 +163,6 @@ void HTMLImageElement::parseAttribute(const QualifiedName& name, const AtomicStr
         if (renderer() && renderer()->isImage())
             toRenderImage(renderer())->setImageDevicePixelRatio(m_imageDevicePixelRatio);
         m_imageLoader.updateFromElementIgnoringPreviousError();
-    } else if (RuntimeEnabledFeatures::pictureSizesEnabled() && name == sizesAttr) {
-        m_effectiveSize = SizesAttributeParser::findEffectiveSize(value, MediaValuesDynamic::create(document()));
     } else if (name == usemapAttr) {
         setIsLink(!value.isNull());
     } else if (name == compositeAttr) {