cc : Add OnTransformAnimated to transform tree

cc/layers/layer_impl.cc

 // Copyright 2012 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/layers/layer_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 481 matching lines @@
     render_surface_->ResetPropertyChangedFlag();
 }
 
 int LayerImpl::num_copy_requests_in_target_subtree() {
   return layer_tree_impl()
       ->property_trees()
       ->effect_tree.Node(effect_tree_index())
       ->num_copy_requests_in_subtree;
 }
 
-void LayerImpl::UpdatePropertyTreeTransform(const gfx::Transform& transform) {
-  PropertyTrees* property_trees = layer_tree_impl()->property_trees();
-  if (property_trees->IsInIdToIndexMap(PropertyTrees::TreeType::TRANSFORM,
-                                       id())) {
-    // A LayerImpl's own current state is insufficient for determining whether
-    // it owns a TransformNode, since this depends on the state of the
-    // corresponding Layer at the time of the last commit. For example, a
-    // transform animation might have been in progress at the time the last
-    // commit started, but might have finished since then on the compositor
-    // thread.
-    TransformNode* node = property_trees->transform_tree.Node(
-        property_trees->transform_id_to_index_map[id()]);
-    if (node->local != transform) {
-      node->local = transform;
-      node->needs_local_transform_update = true;
-      node->transform_changed = true;
-      property_trees->changed = true;
-      property_trees->transform_tree.set_needs_update(true);
-      layer_tree_impl()->set_needs_update_draw_properties();
-      // TODO(ajuma): The current criteria for creating clip nodes means that
-      // property trees may need to be rebuilt when the new transform isn't
-      // axis-aligned wrt the old transform (see Layer::SetTransform). Since
-      // rebuilding property trees every frame of a transform animation is
-      // something we should try to avoid, change property tree-building so that
-      // it doesn't depend on axis aliginment.
-    }
-  }
-}
-
 void LayerImpl::UpdatePropertyTreeTransformIsAnimated(bool is_animated) {
   PropertyTrees* property_trees = layer_tree_impl()->property_trees();
   if (property_trees->IsInIdToIndexMap(PropertyTrees::TreeType::TRANSFORM,
                                        id())) {
     TransformNode* node = property_trees->transform_tree.Node(
         property_trees->transform_id_to_index_map[id()]);
     // A LayerImpl's own current state is insufficient for determining whether
     // it owns a TransformNode, since this depends on the state of the
     // corresponding Layer at the time of the last commit. For example, if
     // |is_animated| is false, this might mean a transform animation just ticked
@@ skipping 64 matching lines @@
   SetNeedsPushProperties();
   layer_tree_impl()->set_needs_update_draw_properties();
 }
 
 void LayerImpl::OnOpacityAnimated(float opacity) {
   UpdatePropertyTreeOpacity(opacity);
   layer_tree_impl()->set_needs_update_draw_properties();
   layer_tree_impl()->AddToOpacityAnimationsMap(id(), opacity);
 }
 
-void LayerImpl::OnTransformAnimated(const gfx::Transform& transform) {
-  UpdatePropertyTreeTransform(transform);
-  was_ever_ready_since_last_transform_animation_ = false;
-  layer_tree_impl()->AddToTransformAnimationsMap(id(), transform);
-}
-
 void LayerImpl::OnScrollOffsetAnimated(const gfx::ScrollOffset& scroll_offset) {
   // Only layers in the active tree should need to do anything here, since
   // layers in the pending tree will find out about these changes as a
   // result of the shared SyncedProperty.
   if (!IsActive())
     return;
 
   SetCurrentScrollOffset(ClampScrollOffsetToLimits(scroll_offset));
 
   layer_tree_impl_->DidAnimateScrollOffset();
@@ skipping 564 matching lines @@
            .layer_transforms_should_scale_layer_contents) {
     return default_scale;
   }
 
   gfx::Vector2dF transform_scales = MathUtil::ComputeTransform2dScaleComponents(
       ScreenSpaceTransform(), default_scale);
   return std::max(transform_scales.x(), transform_scales.y());
 }
 
 }  // namespace cc