cc: Remove AsValue virtual from DisplayItem.

cc/playback/transform_display_item.cc

Index: cc/playback/transform_display_item.cc
diff --git a/cc/playback/transform_display_item.cc b/cc/playback/transform_display_item.cc
index 173170f731a98b62df17f75f2e022a00dfabd6ed..1ffe66a40d085ce6d53b1dbc4de9c354f5b04966 100644
--- a/cc/playback/transform_display_item.cc
+++ b/cc/playback/transform_display_item.cc
@@ -31,14 +31,6 @@ void TransformDisplayItem::Raster(SkCanvas* canvas,
     canvas->concat(transform_.matrix());
 }
 
-void TransformDisplayItem::AsValueInto(
-    const gfx::Rect& visual_rect,
-    base::trace_event::TracedValue* array) const {
-  array->AppendString(base::StringPrintf(
-      "TransformDisplayItem transform: [%s] visualRect: [%s]",
-      transform_.ToString().c_str(), visual_rect.ToString().c_str()));
-}
-
 EndTransformDisplayItem::EndTransformDisplayItem()
     : DisplayItem(END_TRANSFORM) {}
 
@@ -51,12 +43,4 @@ void EndTransformDisplayItem::Raster(
   canvas->restore();
 }
 
-void EndTransformDisplayItem::AsValueInto(
-    const gfx::Rect& visual_rect,
-    base::trace_event::TracedValue* array) const {
-  array->AppendString(
-      base::StringPrintf("EndTransformDisplayItem visualRect: [%s]",
-                         visual_rect.ToString().c_str()));
-}
-
 }  // namespace cc