CC Animations: Establish AnimationHost, AnimationTimeline and AnimationPlayer

cc/trees/layer_tree_host_impl.cc

Index: cc/trees/layer_tree_host_impl.cc
diff --git a/cc/trees/layer_tree_host_impl.cc b/cc/trees/layer_tree_host_impl.cc
index a49c516fbfe0aa93bf76bf5736f794b19b32a5f8..b7b5f00d2f63fbfa9c54d3630b76da6da05d37ff 100644
--- a/cc/trees/layer_tree_host_impl.cc
+++ b/cc/trees/layer_tree_host_impl.cc
@@ -15,6 +15,7 @@
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "cc/animation/animation_id_provider.h"
+#include "cc/animation/animation_timeline.h"
 #include "cc/animation/scroll_offset_animation_curve.h"
 #include "cc/animation/scrollbar_animation_controller.h"
 #include "cc/animation/timing_function.h"
@@ -926,6 +927,18 @@ void LayerTreeHostImpl::SetViewportDamage(const gfx::Rect& damage_rect) {
   viewport_damage_rect_.Union(damage_rect);
 }
 
+void LayerTreeHostImpl::SetAnimationTimeline(
+    scoped_refptr<AnimationTimeline> timeline) {
+  if (animation_timeline_.get() == timeline.get())
+    return;
+
+  if (animation_timeline_.get())
+    animation_timeline_->SetLayerTreeMutatorsClient(nullptr);
+  animation_timeline_ = timeline;
+  if (animation_timeline_.get())
+    animation_timeline_->SetLayerTreeMutatorsClient(this);
+}
+
 static inline RenderPass* FindRenderPassById(
     RenderPassId render_pass_id,
     const LayerTreeHostImpl::FrameData& frame) {
@@ -3480,4 +3493,75 @@ void LayerTreeHostImpl::NotifySwapPromiseMonitorsOfForwardingToMainThread() {
     (*it)->OnForwardScrollUpdateToMainThreadOnImpl();
 }
 
+AnimationRegistrar* LayerTreeHostImpl::GetAnimationRegistrar() const {
+  return animation_registrar_.get();
+}
+
+void LayerTreeHostImpl::SetMutatorsNeedCommit() {
+  SetNeedsCommit();
+}
+
+void LayerTreeHostImpl::SetTreeLayerFilterMutated(
+    int layer_id,
+    LayerTreeImpl* tree,
+    const FilterOperations& filters) {
+  LayerAnimationValueObserver* layer = tree->LayerById(layer_id);
+  if (layer)
+    layer->OnFilterAnimated(filters);
+}
+
+void LayerTreeHostImpl::SetTreeLayerOpacityMutated(int layer_id,
+                                                   LayerTreeImpl* tree,
+                                                   float opacity) {
+  LayerAnimationValueObserver* layer = tree->LayerById(layer_id);
+  if (layer)
+    layer->OnOpacityAnimated(opacity);
+}
+
+void LayerTreeHostImpl::SetTreeLayerTransformMutated(
+    int layer_id,
+    LayerTreeImpl* tree,
+    const gfx::Transform& transform) {
+  if (!tree)
+    return;
+
+  LayerAnimationValueObserver* layer = tree->LayerById(layer_id);
+  if (layer)
+    layer->OnTransformAnimated(transform);
+}
+
+void LayerTreeHostImpl::SetLayerFilterMutated(int layer_id,
+                                              bool affects_active_tree,
+                                              const FilterOperations& filters) {
+  if (affects_active_tree) {
+    SetTreeLayerFilterMutated(layer_id, active_tree(), filters);
+  } else {
+    SetTreeLayerFilterMutated(layer_id, pending_tree(), filters);
+    SetTreeLayerFilterMutated(layer_id, recycle_tree(), filters);
+  }
+}
+
+void LayerTreeHostImpl::SetLayerOpacityMutated(int layer_id,
+                                               bool affects_active_tree,
+                                               float opacity) {
+  if (affects_active_tree) {
+    SetTreeLayerOpacityMutated(layer_id, active_tree(), opacity);
+  } else {
+    SetTreeLayerOpacityMutated(layer_id, pending_tree(), opacity);
+    SetTreeLayerOpacityMutated(layer_id, recycle_tree(), opacity);
+  }
+}
+
+void LayerTreeHostImpl::SetLayerTransformMutated(
+    int layer_id,
+    bool affects_active_tree,
+    const gfx::Transform& transform) {
+  if (affects_active_tree) {
+    SetTreeLayerTransformMutated(layer_id, active_tree(), transform);
+  } else {
+    SetTreeLayerTransformMutated(layer_id, pending_tree(), transform);
+    SetTreeLayerTransformMutated(layer_id, recycle_tree(), transform);
+  }
+}
+
 }  // namespace cc