WIP: Implement CSS transitions on top of InterpolationTypes instead of AnimatableValues

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

Index: third_party/WebKit/Source/core/animation/KeyframeEffectModel.cpp
diff --git a/third_party/WebKit/Source/core/animation/KeyframeEffectModel.cpp b/third_party/WebKit/Source/core/animation/KeyframeEffectModel.cpp
index ab4703d3570cf134c0411892dfa8f1915a6bc060..e31edd7770bc43e97a7a47c9f33ff0dde8f0f22b 100644
--- a/third_party/WebKit/Source/core/animation/KeyframeEffectModel.cpp
+++ b/third_party/WebKit/Source/core/animation/KeyframeEffectModel.cpp
@@ -60,22 +60,14 @@ void KeyframeEffectModelBase::setFrames(KeyframeVector& keyframes)
     m_keyframes = keyframes;
     m_keyframeGroups = nullptr;
     m_interpolationEffect.clear();
-    m_lastFraction = std::numeric_limits<double>::quiet_NaN();
+    clearLastFraction();
 }
 
-bool KeyframeEffectModelBase::sample(int iteration, double fraction, double iterationDuration, Vector<RefPtr<Interpolation>>& result) const
+void KeyframeEffectModelBase::sampleImpl(int iteration, double fraction, double iterationDuration, Vector<RefPtr<Interpolation>>& result) const
 {
-    ASSERT(iteration >= 0);
-    ASSERT(!isNull(fraction));
     ensureKeyframeGroups();
     ensureInterpolationEffectPopulated();
-
-    bool changed = iteration != m_lastIteration || fraction != m_lastFraction || iterationDuration != m_lastIterationDuration;
-    m_lastIteration = iteration;
-    m_lastFraction = fraction;
-    m_lastIterationDuration = iterationDuration;
     m_interpolationEffect.getActiveInterpolations(fraction, iterationDuration, result);
-    return changed;
 }
 
 bool KeyframeEffectModelBase::snapshotNeutralCompositorKeyframes(Element& element, const ComputedStyle& oldStyle, const ComputedStyle& newStyle, const ComputedStyle* parentStyle) const
@@ -152,14 +144,6 @@ KeyframeEffectModelBase::KeyframeVector KeyframeEffectModelBase::normalizedKeyfr
     return result;
 }
 
-bool KeyframeEffectModelBase::isTransformRelatedEffect() const
-{
-    return affects(PropertyHandle(CSSPropertyTransform))
-        || affects(PropertyHandle(CSSPropertyRotate))
-        || affects(PropertyHandle(CSSPropertyScale))
-        || affects(PropertyHandle(CSSPropertyTranslate));
-}
-
 void KeyframeEffectModelBase::ensureKeyframeGroups() const
 {
     if (m_keyframeGroups)