Revert of cc: Make visible rect computation aware of pixel-moving filters

cc/trees/clip_expander.cc

Index: cc/trees/clip_expander.cc
diff --git a/cc/trees/clip_expander.cc b/cc/trees/clip_expander.cc
deleted file mode 100644
index 7284878e95684ca0b4ae2720ee9459416422d434..0000000000000000000000000000000000000000
--- a/cc/trees/clip_expander.cc
+++ /dev/null
@@ -1,43 +0,0 @@
-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "cc/trees/clip_expander.h"
-#include "cc/trees/effect_node.h"
-#include "cc/trees/property_tree.h"
-#include "ui/gfx/transform.h"
-
-namespace cc {
-
-ClipExpander::ClipExpander(int filter_effect_id)
-    : target_effect_id_(filter_effect_id) {}
-
-ClipExpander::ClipExpander(const ClipExpander& other) = default;
-
-bool ClipExpander::operator==(const ClipExpander& other) const {
-  return target_effect_id_ == other.target_effect_id_;
-}
-
-gfx::Rect ClipExpander::MapRect(const gfx::Rect& rect,
-                                const PropertyTrees* property_trees) const {
-  const EffectNode* effect_node =
-      property_trees->effect_tree.Node(target_effect_id_);
-  gfx::Transform filter_draw_transform;
-  filter_draw_transform.Scale(effect_node->surface_contents_scale.x(),
-                              effect_node->surface_contents_scale.y());
-  return effect_node->filters.MapRect(rect, filter_draw_transform.matrix());
-}
-
-gfx::Rect ClipExpander::MapRectReverse(
-    const gfx::Rect& rect,
-    const PropertyTrees* property_trees) const {
-  const EffectNode* effect_node =
-      property_trees->effect_tree.Node(target_effect_id_);
-  gfx::Transform filter_draw_transform;
-  filter_draw_transform.Scale(effect_node->surface_contents_scale.x(),
-                              effect_node->surface_contents_scale.y());
-  return effect_node->filters.MapRectReverse(rect,
-                                             filter_draw_transform.matrix());
-}
-
-}  // namespace cc