[cc] Remove all WTF #includes from CCLayerTreeHost

cc/CCLayerTreeHostImplTest.cpp

Index: cc/CCLayerTreeHostImplTest.cpp
diff --git a/cc/CCLayerTreeHostImplTest.cpp b/cc/CCLayerTreeHostImplTest.cpp
index 3450ba3a4eba31da7e51991faadc8d49fe8cf561..f6bcdcb2c535dca16833e1e1ac8a63cdfd977594 100644
--- a/cc/CCLayerTreeHostImplTest.cpp
+++ b/cc/CCLayerTreeHostImplTest.cpp
@@ -71,7 +71,7 @@ public:
     virtual void onCanDrawStateChanged(bool canDraw) OVERRIDE { m_onCanDrawStateChangedCalled = true; }
     virtual void setNeedsRedrawOnImplThread() OVERRIDE { m_didRequestRedraw = true; }
     virtual void setNeedsCommitOnImplThread() OVERRIDE { m_didRequestCommit = true; }
-    virtual void postAnimationEventsToMainThreadOnImplThread(PassOwnPtr<CCAnimationEventsVector>, double wallClockTime) OVERRIDE { }
+    virtual void postAnimationEventsToMainThreadOnImplThread(scoped_ptr<CCAnimationEventsVector>, double wallClockTime) OVERRIDE { }
     virtual void releaseContentsTexturesOnImplThread() OVERRIDE { }
 
     scoped_ptr<CCLayerTreeHostImpl> createLayerTreeHost(bool partialSwap, scoped_ptr<CCGraphicsContext> graphicsContext, PassOwnPtr<CCLayerImpl> rootPtr)