Revert of Introduce LayerListImpl (patchset #11 id:200001 of https://codereview.chromium.org/1746603002/ )

Reason for revert:
I'm going to try another, less code churny approach to the layer list refactor.

Original issue's description:
> Introduce LayerListImpl
>
> In this cl, the LayerTreeImpl constructs a LayerListImpl.
> The idea being that most plumbing won't need to change at
> first to get the list to where it needs to be. The first
> consumer of the LayerTreeImpl that I'm attempting to
> teach to speak LayerListImpl-ese is the LayerImpl. That
> has not been completely finished in this cl so that it
> doesn't become too big and difficult to review.
>
> NB: since the actual storage of the LayerImpls doesn't
> change in this cl (they're still in the LayerTreeImpl),
> there's no need to guard this work behind a flag.
>
> BUG=557194
> CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
>
> Committed: https://crrev.com/299bf1f63b8253c77530b904874f3435f9bde6d3
> Cr-Commit-Position: refs/heads/master@{#378398}

TBR=weiliangc@chromium.org,ajuma@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=557194

Review URL: https://codereview.chromium.org/1751243002

Cr-Commit-Position: refs/heads/master@{#378608}

1 files changed, 6 insertions, 16 deletions

diff --git a/cc/trees/layer_tree_host_impl.h b/cc/trees/layer_tree_host_impl.h
index a2520fb..9c2e58e 100644
--- a/cc/trees/layer_tree_host_impl.h
+++ b/cc/trees/layer_tree_host_impl.h
@@ -257,24 +257,24 @@ class CC_EXPORT LayerTreeHostImpl
   bool AnimationsPreserveAxisAlignment(const LayerImpl* layer) const;
 
   // LayerTreeMutatorsClient implementation.
-  bool IsLayerInTree(int layer_id, LayerListType list_type) const override;
+  bool IsLayerInTree(int layer_id, LayerTreeType tree_type) const override;
   void SetMutatorsNeedCommit() override;
   void SetMutatorsNeedRebuildPropertyTrees() override;
   void SetLayerFilterMutated(int layer_id,
-                             LayerListType list_type,
+                             LayerTreeType tree_type,
                              const FilterOperations& filters) override;
   void SetLayerOpacityMutated(int layer_id,
-                              LayerListType list_type,
+                              LayerTreeType tree_type,
                               float opacity) override;
   void SetLayerTransformMutated(int layer_id,
-                                LayerListType list_type,
+                                LayerTreeType tree_type,
                                 const gfx::Transform& transform) override;
   void SetLayerScrollOffsetMutated(
       int layer_id,
-      LayerListType list_type,
+      LayerTreeType tree_type,
       const gfx::ScrollOffset& scroll_offset) override;
   void LayerTransformIsPotentiallyAnimatingChanged(int layer_id,
-                                                   LayerListType list_type,
+                                                   LayerTreeType tree_type,
                                                    bool is_animating) override;
   void ScrollOffsetAnimationFinished() override;
   gfx::ScrollOffset GetScrollOffsetForAnimation(int layer_id) const override;
@@ -409,14 +409,6 @@ class CC_EXPORT LayerTreeHostImpl
   virtual void DidFinishImplFrame();
   void DidModifyTilePriorities();
 
-  // TODO(vollick): we will retain both the _tree() and _list() accessors while
-  // we migrate to layer lists, but the plan is to eventually remove the _tree()
-  // ones.
-  LayerListImpl* active_list();
-  const LayerListImpl* active_list() const;
-  LayerListImpl* pending_list();
-  const LayerListImpl* pending_list() const;
-
   LayerTreeImpl* active_tree() { return active_tree_.get(); }
   const LayerTreeImpl* active_tree() const { return active_tree_.get(); }
   LayerTreeImpl* pending_tree() { return pending_tree_.get(); }
@@ -849,8 +841,6 @@ class CC_EXPORT LayerTreeHostImpl
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };
 
-typedef LayerTreeHostImpl LayerListHostImpl;
-
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_IMPL_H_