Bug 1216842 - Part 7: Add easing function to laryer::Animation. r=cam

gfx/layers/composite/AsyncCompositionManager.cpp

@@ -23,6 +23,7 @@
 #include "mozilla/layers/APZUtils.h"    // for CompleteAsyncTransform
 #include "mozilla/layers/Compositor.h"  // for Compositor
 #include "mozilla/layers/CompositorParent.h" // for CompositorParent, etc
+#include "mozilla/layers/LayerAnimationUtils.h" // for TimingFunctionToComputedTimingFunction
 #include "mozilla/layers/LayerMetricsWrapper.h" // for LayerMetricsWrapper
 #include "nsCoord.h"                    // for NSAppUnitsToFloatPixels, etc
 #include "nsDebug.h"                    // for NS_ASSERTION, etc
@@ -595,6 +596,9 @@ SampleAnimations(Layer* aLayer, TimeStamp aPoint)
     // example, while they are waiting to be removed) we currently just
     // assume that we should fill.
     timing.mFill = dom::FillMode::Both;
+    timing.mFunction =
+      AnimationUtils::TimingFunctionToComputedTimingFunction(
+        animation.easingFunction());
 
     ComputedTiming computedTiming =
       dom::KeyframeEffectReadOnly::GetComputedTimingAt(

gfx/layers/ipc/LayersMessages.ipdlh

@@ -200,6 +200,8 @@ struct Animation {
   nsCSSProperty property;
   AnimationData data;
   float playbackRate;
+  // This is used in the transformed progress calculation.
+  TimingFunction easingFunction;
 };
 
 // Change a layer's attributes

layout/base/nsDisplayList.cpp

@@ -401,6 +401,7 @@ AddAnimationForProperty(nsIFrame* aFrame, const AnimationProperty& aProperty,
   animation->property() = aProperty.mProperty;
   animation->playbackRate() = aAnimation->PlaybackRate();
   animation->data() = aData;
+  animation->easingFunction() = ToTimingFunction(timing.mFunction);
 
   for (uint32_t segIdx = 0; segIdx < aProperty.mSegments.Length(); segIdx++) {
     const AnimationPropertySegment& segment = aProperty.mSegments[segIdx];