Revert of Correctly handle damage involving filters in SurfaceAggregator

cc/surfaces/surface_aggregator.h

Index: cc/surfaces/surface_aggregator.h
diff --git a/cc/surfaces/surface_aggregator.h b/cc/surfaces/surface_aggregator.h
index 35910f3715f7bcd913683395830748f9736dd4ab..64991232a1a2d2b32841f660c8e47682d7b11c33 100644
--- a/cc/surfaces/surface_aggregator.h
+++ b/cc/surfaces/surface_aggregator.h
@@ -56,6 +56,7 @@
   struct PrewalkResult {
     PrewalkResult();
     ~PrewalkResult();
+    bool has_copy_requests = false;
     // This is the set of Surfaces that were referenced by another Surface, but
     // not included in a SurfaceDrawQuad.
     std::set<SurfaceId> undrawn_surfaces;
@@ -84,10 +85,7 @@
       const ClipData& clip_rect,
       RenderPass* dest_pass,
       SurfaceId surface_id);
-  gfx::Rect PrewalkTree(SurfaceId surface_id,
-                        bool in_moved_pixel_pass,
-                        RenderPassId parent_pass,
-                        PrewalkResult* result);
+  gfx::Rect PrewalkTree(SurfaceId surface_id, PrewalkResult* result);
   void CopyUndrawnSurfaces(PrewalkResult* prewalk);
   void CopyPasses(const DelegatedFrameData* frame_data, Surface* surface);
 
@@ -96,8 +94,6 @@
   // Also notifies SurfaceAggregatorClient of newly added and removed
   // child surfaces.
   void ProcessAddedAndRemovedSurfaces();
-
-  void PropagateCopyRequestPasses();
 
   int ChildIdForSurface(Surface* surface);
   gfx::Rect DamageRectForSurface(const Surface* surface,
@@ -140,21 +136,6 @@
   // This is the pass list for the aggregated frame.
   RenderPassList* dest_pass_list_;
 
-  // This is the set of aggregated pass ids that are affected by filters that
-  // move pixels.
-  std::unordered_set<RenderPassId, RenderPassIdHash> moved_pixel_passes_;
-
-  // This is the set of aggregated pass ids that are drawn by copy requests, so
-  // should not have their damage rects clipped to the root damage rect.
-  std::unordered_set<RenderPassId, RenderPassIdHash> copy_request_passes_;
-
-  // This maps each aggregated pass id to the set of (aggregated) pass ids
-  // that its RenderPassDrawQuads depend on
-  std::unordered_map<RenderPassId,
-                     std::unordered_set<RenderPassId, RenderPassIdHash>,
-                     RenderPassIdHash>
-      render_pass_dependencies_;
-
   // The root damage rect of the currently-aggregating frame.
   gfx::Rect root_damage_rect_;