cc: Stop cache transform invertibility at Layer and LayerImpl

cc/layers/layer_impl.h

 // Copyright 2011 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.
 
 #ifndef CC_LAYERS_LAYER_IMPL_H_
 #define CC_LAYERS_LAYER_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 446 matching lines @@
   void SetDoubleSided(bool double_sided);
   bool double_sided() const { return double_sided_; }
 
   void SetTransform(const gfx::Transform& transform);
   const gfx::Transform& transform() const { return transform_; }
   bool TransformIsAnimating() const;
   bool HasPotentiallyRunningTransformAnimation() const;
   bool TransformIsAnimatingOnImplOnly() const;
   bool HasOnlyTranslationTransforms() const;
   bool AnimationsPreserveAxisAlignment() const;
-  void SetTransformAndInvertibility(const gfx::Transform& transform,
-                                    bool transform_is_invertible);
-  bool transform_is_invertible() const { return transform_is_invertible_; }
 
   bool MaximumTargetScale(float* max_scale) const;
   bool AnimationStartScale(float* start_scale) const;
 
   // This includes all animations, even those that are finished but haven't yet
   // been deleted.
   bool HasAnyAnimationTargetingProperty(TargetProperty::Type property) const;
 
   bool HasFilterAnimationThatInflatesBounds() const;
   bool HasTransformAnimationThatInflatesBounds() const;
@@ skipping 187 matching lines @@
 
   bool masks_to_bounds_ : 1;
   bool contents_opaque_ : 1;
   bool is_root_for_isolated_group_ : 1;
   bool use_parent_backface_visibility_ : 1;
   bool use_local_transform_for_backface_visibility_ : 1;
   bool should_check_backface_visibility_ : 1;
   bool draws_content_ : 1;
   bool hide_layer_and_subtree_ : 1;
 
-  // Cache transform_'s invertibility.
-  bool transform_is_invertible_ : 1;
-
   // Set for the layer that other layers are fixed to.
   bool is_container_for_fixed_position_layers_ : 1;
 
   bool is_affected_by_page_scale_ : 1;
 
   // This is true if and only if the layer was ever ready since it last animated
   // (all content was complete).
   bool was_ever_ready_since_last_transform_animation_ : 1;
 
   Region non_fast_scrollable_region_;
@@ skipping 67 matching lines @@
   bool scrolls_drawn_descendant_;
   // If true, the layer or one of its descendants has a touch handler.
   bool layer_or_descendant_has_touch_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_IMPL_H_