cc: Remove allocation of unused SkPictureRecorder.

The recorder is only used if use_cached_picture_, in which case another one is
allocated immediately afterward anyhow.

Review URL: https://codereview.chromium.org/1135813003

Cr-Commit-Position: refs/heads/master@{#328996}

cc/resources/display_item_list.cc

@@ -40,7 +40,6 @@ DisplayItemList::DisplayItemList(gfx::Rect layer_rect,
                                  bool use_cached_picture,
                                  bool retain_individual_display_items)
     : items_(LargestDisplayItemSize(), kDefaultNumDisplayItemsToReserve),
-      recorder_(new SkPictureRecorder()),
       use_cached_picture_(use_cached_picture),
       retain_individual_display_items_(retain_individual_display_items),
       layer_rect_(layer_rect),