Move cc::DisplayItemList and related classes into cc/paint/

cc/paint/drawing_display_item.cc

Index: cc/paint/drawing_display_item.cc
diff --git a/cc/playback/drawing_display_item.cc b/cc/paint/drawing_display_item.cc
similarity index 95%
rename from cc/playback/drawing_display_item.cc
rename to cc/paint/drawing_display_item.cc
index a6d2274c26fb0324c9ea97cfdda6262dca53696a..9ae465e2ba9a1ebcd711b2382206c79bd5256573 100644
--- a/cc/playback/drawing_display_item.cc
+++ b/cc/paint/drawing_display_item.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "cc/playback/drawing_display_item.h"
+#include "cc/paint/drawing_display_item.h"
 
 #include <stddef.h>
 
@@ -30,8 +30,7 @@ DrawingDisplayItem::DrawingDisplayItem(const DrawingDisplayItem& item)
   item.CloneTo(this);
 }
 
-DrawingDisplayItem::~DrawingDisplayItem() {
-}
+DrawingDisplayItem::~DrawingDisplayItem() {}
 
 void DrawingDisplayItem::SetNew(sk_sp<const PaintRecord> record) {
   picture_ = std::move(record);