cc: Remove AsValue virtual from DisplayItem.

cc/playback/compositing_display_item.cc

Index: cc/playback/compositing_display_item.cc
diff --git a/cc/playback/compositing_display_item.cc b/cc/playback/compositing_display_item.cc
index 628ab5617aa9fcb8f685090b72a60bdc8924e6cc..77635bfe6285df7605ae81c44e0cacd230864e97 100644
--- a/cc/playback/compositing_display_item.cc
+++ b/cc/playback/compositing_display_item.cc
@@ -61,21 +61,6 @@ void CompositingDisplayItem::Raster(
     canvas->saveLayerPreserveLCDTextRequests(bounds, &paint);
 }
 
-void CompositingDisplayItem::AsValueInto(
-    const gfx::Rect& visual_rect,
-    base::trace_event::TracedValue* array) const {
-  std::string info = base::StringPrintf(
-      "CompositingDisplayItem alpha: %d, xfermode: %d, visualRect: [%s]",
-      alpha_, static_cast<int>(xfermode_), visual_rect.ToString().c_str());
-  if (has_bounds_) {
-    base::StringAppendF(
-        &info, ", bounds: [%f, %f, %f, %f]", static_cast<float>(bounds_.x()),
-        static_cast<float>(bounds_.y()), static_cast<float>(bounds_.width()),
-        static_cast<float>(bounds_.height()));
-  }
-  array->AppendString(info);
-}
-
 EndCompositingDisplayItem::EndCompositingDisplayItem()
     : DisplayItem(END_COMPOSITING) {}
 
@@ -88,12 +73,4 @@ void EndCompositingDisplayItem::Raster(
   canvas->restore();
 }
 
-void EndCompositingDisplayItem::AsValueInto(
-    const gfx::Rect& visual_rect,
-    base::trace_event::TracedValue* array) const {
-  array->AppendString(
-      base::StringPrintf("EndCompositingDisplayItem visualRect: [%s]",
-                         visual_rect.ToString().c_str()));
-}
-
 }  // namespace cc