Revert of Add additive animation support for CSS property background-position

third_party/WebKit/Source/core/animation/LengthListPropertyFunctions.cpp

Index: third_party/WebKit/Source/core/animation/LengthListPropertyFunctions.cpp
diff --git a/third_party/WebKit/Source/core/animation/LengthListPropertyFunctions.cpp b/third_party/WebKit/Source/core/animation/LengthListPropertyFunctions.cpp
deleted file mode 100644
index 62680c3450d5a13992161e2c35fd823e47a464e1..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/core/animation/LengthListPropertyFunctions.cpp
+++ /dev/null
@@ -1,139 +0,0 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "core/animation/LengthListPropertyFunctions.h"
-
-#include "core/style/ComputedStyle.h"
-
-namespace blink {
-
-namespace {
-
-const FillLayer* getFillLayer(CSSPropertyID property, const ComputedStyle& style)
-{
-    switch (property) {
-    case CSSPropertyBackgroundPositionX:
-    case CSSPropertyBackgroundPositionY:
-        return &style.backgroundLayers();
-    case CSSPropertyWebkitMaskPositionX:
-    case CSSPropertyWebkitMaskPositionY:
-        return &style.maskLayers();
-    default:
-        ASSERT_NOT_REACHED();
-        return nullptr;
-    }
-}
-
-FillLayer* accessFillLayer(CSSPropertyID property, ComputedStyle& style)
-{
-    switch (property) {
-    case CSSPropertyBackgroundPositionX:
-    case CSSPropertyBackgroundPositionY:
-        return &style.accessBackgroundLayers();
-    case CSSPropertyWebkitMaskPositionX:
-    case CSSPropertyWebkitMaskPositionY:
-        return &style.accessMaskLayers();
-    default:
-        ASSERT_NOT_REACHED();
-        return nullptr;
-    }
-}
-
-struct FillLayerMethods {
-    FillLayerMethods(CSSPropertyID property)
-    {
-        switch (property) {
-        case CSSPropertyBackgroundPositionX:
-        case CSSPropertyWebkitMaskPositionX:
-            isSet = &FillLayer::isXPositionSet;
-            get = &FillLayer::xPosition;
-            set = &FillLayer::setXPosition;
-            clear = &FillLayer::clearXPosition;
-            break;
-        case CSSPropertyBackgroundPositionY:
-        case CSSPropertyWebkitMaskPositionY:
-            isSet = &FillLayer::isYPositionSet;
-            get = &FillLayer::yPosition;
-            set = &FillLayer::setYPosition;
-            clear = &FillLayer::clearYPosition;
-            break;
-        default:
-            break;
-        }
-    }
-
-    bool (FillLayer::*isSet)() const;
-    const Length& (FillLayer::*get)() const;
-    void (FillLayer::*set)(const Length&);
-    void (FillLayer::*clear)();
-};
-
-} // namespace
-
-ValueRange LengthListPropertyFunctions::valueRange(CSSPropertyID property)
-{
-    switch (property) {
-    case CSSPropertyBackgroundPositionX:
-    case CSSPropertyBackgroundPositionY:
-    case CSSPropertyWebkitMaskPositionX:
-    case CSSPropertyWebkitMaskPositionY:
-        return ValueRangeAll;
-
-    case CSSPropertyStrokeDasharray:
-        return ValueRangeNonNegative;
-
-    default:
-        ASSERT_NOT_REACHED();
-        return ValueRangeAll;
-    }
-}
-
-Vector<Length> LengthListPropertyFunctions::getInitialLengthList(CSSPropertyID property)
-{
-    return getLengthList(property, *ComputedStyle::initialStyle());
-}
-
-Vector<Length> LengthListPropertyFunctions::getLengthList(CSSPropertyID property, const ComputedStyle& style)
-{
-    Vector<Length> result;
-
-    if (property == CSSPropertyStrokeDasharray) {
-        if (style.strokeDashArray())
-            result.appendVector(style.strokeDashArray()->vector());
-        return result;
-    }
-
-    const FillLayer* fillLayer = getFillLayer(property, style);
-    FillLayerMethods fillLayerMethods(property);
-    while (fillLayer && (fillLayer->*fillLayerMethods.isSet)()) {
-        result.append((fillLayer->*fillLayerMethods.get)());
-        fillLayer = fillLayer->next();
-    }
-    return result;
-}
-
-void LengthListPropertyFunctions::setLengthList(CSSPropertyID property, ComputedStyle& style, Vector<Length>&& lengthList)
-{
-    if (property == CSSPropertyStrokeDasharray) {
-        style.setStrokeDashArray(lengthList.isEmpty() ? nullptr : RefVector<Length>::create(std::move(lengthList)));
-        return;
-    }
-
-    FillLayer* fillLayer = accessFillLayer(property, style);
-    FillLayer* prev = nullptr;
-    FillLayerMethods fillLayerMethods(property);
-    for (size_t i = 0; i < lengthList.size(); i++) {
-        if (!fillLayer)
-            fillLayer = prev->ensureNext();
-        (fillLayer->*fillLayerMethods.set)(lengthList[i]);
-        prev = fillLayer;
-        fillLayer = fillLayer->next();
-    }
-    while (fillLayer) {
-        (fillLayer->*fillLayerMethods.clear)();
-        fillLayer = fillLayer->next();
-    }
-}
-
-} // namespace blink