Oilpan: fix tracing of KeyframeVector which is a HeapVector of Members.

Source/core/animation/css/CSSAnimations.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 76 matching lines @@
         TimingFunction* timingFunction = perKeyframeTimingFunctions.get(lowerBound);
         isTimingFunctionLinearThroughout &= timingFunction->type() == TimingFunction::LinearFunction;
         chainedTimingFunction->appendSegment(upperBound, timingFunction);
     }
     if (isTimingFunctionLinearThroughout)
         return LinearTimingFunction::create();
     return chainedTimingFunction;
 }
 
 static void resolveKeyframes(StyleResolver* resolver, Element* element, const Element& parentElement, const RenderStyle& style, RenderStyle* parentStyle, const AtomicString& name, TimingFunction* defaultTimingFunction,
-    Vector<std::pair<KeyframeEffectModel::KeyframeVector, RefPtr<TimingFunction> > >& keyframesAndTimingFunctions)
+    WillBeHeapVector<std::pair<KeyframeEffectModel::KeyframeVector, RefPtr<TimingFunction> > >& keyframesAndTimingFunctions)
 {
     // When the element is null, use its parent for scoping purposes.
     const Element* elementForScoping = element ? element : &parentElement;
     const StyleRuleKeyframes* keyframesRule = CSSAnimations::matchScopedKeyframesRule(resolver, elementForScoping, name.impl());
     if (!keyframesRule)
         return;
 
     const Vector<RefPtr<StyleKeyframe> >& styleKeyframes = keyframesRule->keyframes();
     if (styleKeyframes.isEmpty())
         return;
@@ skipping 292 matching lines @@
                         ASSERT(!activeAnimations || !activeAnimations->isAnimationStyleChange());
                         update->toggleAnimationPaused(animationName);
                     }
                     continue;
                 }
             }
 
             Timing timing;
             bool isPaused;
             RefPtr<TimingFunction> defaultTimingFunction = timingFromAnimationData(animationData, timing, isPaused);
-            Vector<std::pair<KeyframeEffectModel::KeyframeVector, RefPtr<TimingFunction> > > keyframesAndTimingFunctions;
+            WillBeHeapVector<std::pair<KeyframeEffectModel::KeyframeVector, RefPtr<TimingFunction> > > keyframesAndTimingFunctions;
             resolveKeyframes(resolver, element, parentElement, style, parentStyle, animationName, defaultTimingFunction.get(), keyframesAndTimingFunctions);
             if (!keyframesAndTimingFunctions.isEmpty()) {
                 HashSet<RefPtr<InertAnimation> > animations;
                 for (size_t j = 0; j < keyframesAndTimingFunctions.size(); ++j) {
                     ASSERT(!keyframesAndTimingFunctions[j].first.isEmpty());
                     timing.timingFunction = keyframesAndTimingFunctions[j].second;
                     // FIXME: crbug.com/268791 - Keyframes are already normalized, perhaps there should be a flag on KeyframeEffectModel to skip normalization.
                     animations.add(InertAnimation::create(KeyframeEffectModel::create(keyframesAndTimingFunctions[j].first), timing, isPaused));
                 }
                 ASSERT(!activeAnimations || !activeAnimations->isAnimationStyleChange());
@@ skipping 495 matching lines @@
             CSSPropertyID id = convertToCSSPropertyID(i);
             if (isAnimatableProperty(id))
                 properties.append(id);
         }
         propertyShorthand = StylePropertyShorthand(CSSPropertyInvalid, properties.begin(), properties.size());
     }
     return propertyShorthand;
 }
 
 } // namespace WebCore