cc: Compute animation scale on demand

cc/trees/property_tree_builder.cc

 // Copyright 2014 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/property_tree_builder.h"
 
 #include <stddef.h>
 
 #include <map>
 #include <set>
@@ skipping 540 matching lines @@
       node->id, data_for_children->property_trees->effect_tree
                     .Node(data_for_children->render_target)
                     ->data.transform_id);
   DCHECK_NE(
       data_for_children->property_trees->transform_tree.TargetId(node->id),
       kInvalidPropertyTreeNodeId);
 
   node->data.has_potential_animation = has_potentially_animated_transform;
   node->data.is_currently_animating = layer->TransformIsAnimating();
   if (has_potentially_animated_transform) {
-    float maximum_animation_target_scale = 0.f;
-    if (layer->MaximumTargetScale(&maximum_animation_target_scale)) {
-      node->data.local_maximum_animation_target_scale =
-          maximum_animation_target_scale;
-    }
-
-    float starting_animation_scale = 0.f;
-    if (layer->AnimationStartScale(&starting_animation_scale)) {
-      node->data.local_starting_animation_scale = starting_animation_scale;
-    }
-
     node->data.has_only_translation_animations =
         layer->HasOnlyTranslationTransforms();
   }
 
   float post_local_scale_factor = 1.0f;
   if (is_root)
     post_local_scale_factor =
         data_for_children->property_trees->transform_tree.device_scale_factor();
 
   if (is_page_scale_layer) {
@@ skipping 804 matching lines @@
   property_trees->is_main_thread = false;
   property_trees->is_active = root_layer->IsActive();
   SkColor color = root_layer->layer_tree_impl()->background_color();
   if (SkColorGetA(color) != 255)
     color = SkColorSetA(color, 255);
   BuildPropertyTreesTopLevelInternal(
       root_layer, page_scale_layer, inner_viewport_scroll_layer,
       outer_viewport_scroll_layer, overscroll_elasticity_layer,
       elastic_overscroll, page_scale_factor, device_scale_factor, viewport,
       device_transform, property_trees, color);
+  property_trees->ResetCachedData();
 }
 
 }  // namespace cc