SMIL animation should only progress() on active documents

Source/core/svg/animation/SMILTimeContainer.cpp

Index: Source/core/svg/animation/SMILTimeContainer.cpp
diff --git a/Source/core/svg/animation/SMILTimeContainer.cpp b/Source/core/svg/animation/SMILTimeContainer.cpp
index 802a94cb39fb691813fa783f197a861ce5b1a8a6..2061b114a98921107d79ee6bdf6fd5feae731f19 100644
--- a/Source/core/svg/animation/SMILTimeContainer.cpp
+++ b/Source/core/svg/animation/SMILTimeContainer.cpp
@@ -84,6 +84,7 @@ void SMILTimeContainer::schedule(SVGSMILElement* animation, SVGElement* target,
     ASSERT(target);
     ASSERT(animation->hasValidAttributeName());
     ASSERT(animation->hasValidAttributeType());
+    ASSERT(animation->inActiveDocument());
 
 #if ENABLE(ASSERT)
     ASSERT(!m_preventScheduledAnimationsChanges);
@@ -170,6 +171,9 @@ void SMILTimeContainer::begin()
 {
     RELEASE_ASSERT(!m_beginTime);
 
+    if (!document().isActive())
+        return;
+
     if (!handleAnimationPolicy(RestartOnceTimerIfNotPaused))
         return;
 
@@ -426,6 +430,9 @@ void SMILTimeContainer::serviceAnimations(double monotonicAnimationStartTime)
 
 void SMILTimeContainer::updateAnimationsAndScheduleFrameIfNeeded(SMILTime elapsed, bool seekToTime)
 {
+    if (!document().isActive())
+        return;
+
 #if !ENABLE(OILPAN)
     DiscardScope discardScope(m_ownerSVGElement);
 #endif
@@ -446,6 +453,7 @@ void SMILTimeContainer::updateAnimationsAndScheduleFrameIfNeeded(SMILTime elapse
 
 SMILTime SMILTimeContainer::updateAnimations(SMILTime elapsed, bool seekToTime)
 {
+    ASSERT(document().isActive());
     SMILTime earliestFireTime = SMILTime::unresolved();
 
 #if ENABLE(ASSERT)