cc: Stop cache transform invertibility at Layer and LayerImpl

cc/layers/layer.h

 // Copyright 2010 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_H_
 #define CC_LAYERS_LAYER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 181 matching lines @@
   const LayerPositionConstraint& position_constraint() const {
     return position_constraint_;
   }
 
   void SetTransform(const gfx::Transform& transform);
   const gfx::Transform& transform() const { return transform_; }
   bool TransformIsAnimating() const;
   bool HasPotentiallyRunningTransformAnimation() const;
   bool HasOnlyTranslationTransforms() const;
   bool AnimationsPreserveAxisAlignment() const;
-  bool transform_is_invertible() const { return transform_is_invertible_; }
 
   bool MaximumTargetScale(float* max_scale) const;
   bool AnimationStartScale(float* start_scale) const;
 
   void SetTransformOrigin(const gfx::Point3F&);
   gfx::Point3F transform_origin() const { return transform_origin_; }
 
   bool HasAnyAnimationTargetingProperty(TargetProperty::Type property) const;
 
   bool ScrollOffsetAnimationWasInterrupted() const;
@@ skipping 422 matching lines @@
   bool draws_content_ : 1;
   bool hide_layer_and_subtree_ : 1;
   bool masks_to_bounds_ : 1;
   bool contents_opaque_ : 1;
   bool double_sided_ : 1;
   bool should_flatten_transform_ : 1;
   bool use_parent_backface_visibility_ : 1;
   bool use_local_transform_for_backface_visibility_ : 1;
   bool should_check_backface_visibility_ : 1;
   bool force_render_surface_for_testing_ : 1;
-  bool transform_is_invertible_ : 1;
   bool has_render_surface_ : 1;
   bool subtree_property_changed_ : 1;
   Region non_fast_scrollable_region_;
   Region touch_event_handler_region_;
   gfx::PointF position_;
   SkColor background_color_;
   SkColor safe_opaque_background_color_;
   float opacity_;
   SkXfermode::Mode blend_mode_;
   // draw_blend_mode may be different than blend_mode_,
@@ skipping 25 matching lines @@
   // These all act like draw properties, so don't need push properties.
   gfx::Rect visible_layer_rect_;
   size_t num_unclipped_descendants_;
 
   DISALLOW_COPY_AND_ASSIGN(Layer);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_H_