cc: Clean up naming of paint-related identifiers

cc/playback/drawing_display_item.h

Index: cc/playback/drawing_display_item.h
diff --git a/cc/playback/drawing_display_item.h b/cc/playback/drawing_display_item.h
index 871ad09d5f15780d399f000f8c97ef1b6941b88f..ef5f4d57d658479735175ecfba0caa9619811f15 100644
--- a/cc/playback/drawing_display_item.h
+++ b/cc/playback/drawing_display_item.h
@@ -23,7 +23,7 @@ namespace cc {
 class CC_EXPORT DrawingDisplayItem : public DisplayItem {
  public:
   DrawingDisplayItem();
-  explicit DrawingDisplayItem(sk_sp<const PaintRecord> picture);
+  explicit DrawingDisplayItem(sk_sp<const PaintRecord> record);
   explicit DrawingDisplayItem(const DrawingDisplayItem& item);
   ~DrawingDisplayItem() override;
 
@@ -38,7 +38,7 @@ class CC_EXPORT DrawingDisplayItem : public DisplayItem {
   void CloneTo(DrawingDisplayItem* item) const;
 
  private:
-  void SetNew(sk_sp<const PaintRecord> picture);
+  void SetNew(sk_sp<const PaintRecord> record);
 
   sk_sp<const PaintRecord> picture_;
 };