Bug 1334036 - Part 10: Return AnimationValue for BaseStyle. r=hiro

We need to retrieve the correct base style for Servo backend, so change
the return value to AnimationValue and update
KeyframeEffectReadOnly::BaseStyle().

MozReview-Commit-ID: 9FL3h1DLoJt

--HG--
extra : rebase_source : 42284c5fe8b8135910cde44b0815eb475ca2f1cc

dom/animation/KeyframeEffectReadOnly.cpp

@@ -427,7 +427,7 @@ KeyframeEffectReadOnly::GetUnderlyingStyle(
     // If we are composing with composite operation that is not 'replace'
     // and we have not composed style for the property yet, we have to get
     // the base style for the property.
-    result = BaseStyle(aProperty);
+    result = BaseStyle(aProperty).mGecko;
   }
 
   return result;
@@ -1297,7 +1297,8 @@ KeyframeEffectReadOnly::GetKeyframes(JSContext*& aCx,
           // handle null nsCSSValues for longhand properties.
           DebugOnly<bool> uncomputeResult =
             StyleAnimationValue::UncomputeValue(
-              propertyValue.mProperty, Move(BaseStyle(propertyValue.mProperty)),
+              propertyValue.mProperty,
+              Move(BaseStyle(propertyValue.mProperty).mGecko),
               cssValue);
 
           MOZ_ASSERT(uncomputeResult,
@@ -1848,7 +1849,7 @@ KeyframeEffectReadOnly::ContainsAnimatedScale(const nsIFrame* aFrame) const
       continue;
     }
 
-    StyleAnimationValue baseStyle = BaseStyle(prop.mProperty);
+    AnimationValue baseStyle = BaseStyle(prop.mProperty);
     if (baseStyle.IsNull()) {
       // If we failed to get the base style, we consider it has scale value
       // here just to be safe.

dom/animation/KeyframeEffectReadOnly.h

@@ -279,10 +279,18 @@ public:
   // |aFrame| is used for calculation of scale values.
   bool ContainsAnimatedScale(const nsIFrame* aFrame) const;
 
-  StyleAnimationValue BaseStyle(nsCSSPropertyID aProperty) const
+  AnimationValue BaseStyle(nsCSSPropertyID aProperty) const
   {
-    StyleAnimationValue result;
-    DebugOnly<bool> hasProperty = mBaseStyleValues.Get(aProperty, &result);
+    AnimationValue result;
+    bool hasProperty = false;
+    if (mDocument->IsStyledByServo()) {
+      // We cannot use getters_AddRefs on RawServoAnimationValue because it is
+      // an incomplete type, so Get() doesn't work. Instead, use GetWeak, and
+      // then assign the raw pointer to a RefPtr.
+      result.mServo = mBaseStyleValuesForServo.GetWeak(aProperty, &hasProperty);
+    } else {
+      hasProperty = mBaseStyleValues.Get(aProperty, &result.mGecko);
+    }
     MOZ_ASSERT(hasProperty || result.IsNull());
     return result;
   }

layout/base/nsLayoutUtils.cpp

@@ -633,12 +633,9 @@ GetMinAndMaxScaleForAnimationProperty(const nsIFrame* aFrame,
 
       // We need to factor in the scale of the base style if the base style
       // will be used on the compositor.
-      StyleAnimationValue baseStyle = effect->BaseStyle(prop.mProperty);
+      AnimationValue baseStyle = effect->BaseStyle(prop.mProperty);
       if (!baseStyle.IsNull()) {
-        // FIXME: Bug 1334036: We need to get the baseStyle for
-        //        RawServoAnimationValue.
-        UpdateMinMaxScale(aFrame, AnimationValue(baseStyle),
-                          aMinScale, aMaxScale);
+        UpdateMinMaxScale(aFrame, baseStyle, aMinScale, aMaxScale);
       }
 
       for (const AnimationPropertySegment& segment : prop.mSegments) {

layout/painting/nsDisplayList.cpp

@@ -566,13 +566,11 @@ AddAnimationForProperty(nsIFrame* aFrame, const AnimationProperty& aProperty,
   // If the animation is additive or accumulates, we need to pass its base value
   // to the compositor.
 
-  StyleAnimationValue baseStyle =
+  AnimationValue baseStyle =
     aAnimation->GetEffect()->AsKeyframeEffect()->BaseStyle(aProperty.mProperty);
   if (!baseStyle.IsNull()) {
-    // FIXME: Bug 1334036: We need to get the baseValue for
-    //        RawServoAnimationValue.
     SetAnimatable(aProperty.mProperty,
-                  AnimationValue(baseStyle),
+                  baseStyle,
                   aFrame, refBox,
                   animation->baseStyle());
   } else {