Web Animations: Remove legacy animations engine.

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index aae58dd8cb95fb376936800d57d8fddd5915a598..e5322ba21c8da712ef322a1e9dd8a7c78890f0af 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -118,7 +118,6 @@
 #include "core/frame/History.h"
 #include "core/frame/PageConsole.h"
 #include "core/frame/Settings.h"
-#include "core/frame/animation/AnimationController.h"
 #include "core/html/HTMLAllCollection.h"
 #include "core/html/HTMLAnchorElement.h"
 #include "core/html/HTMLCanvasElement.h"
@@ -1811,7 +1810,6 @@ void Document::updateStyleIfNeeded()
         return;
 
     RefPtr<Frame> holder(m_frame);
-    AnimationUpdateBlock animationUpdateBlock(m_frame ? &m_frame->animation() : 0);
     recalcStyle(NoChange);
     DocumentAnimations::serviceAfterStyleRecalc(*this);
 }