CC: Add fill mode to compositor animations

cc/animation/layer_animation_controller.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/animation/layer_animation_controller.h"
 
 #include <algorithm>
 
 #include "cc/animation/animation.h"
 #include "cc/animation/animation_delegate.h"
@@ skipping 126 matching lines @@
     base::TimeTicks monotonic_time,
     AnimationEventsVector* events) {
   if (!events)
     return;
 
   for (size_t i = 0; i < animations_.size(); ++i) {
     Animation* animation = animations_[i];
     if (!animation->is_impl_only())
       continue;
 
+    if (animation->NoEffectBeforeAnimation(monotonic_time))
+      continue;
+
     double trimmed = animation->TrimTimeToCurrentIteration(monotonic_time);
     switch (animation->target_property()) {
       case Animation::Opacity: {
         AnimationEvent event(AnimationEvent::PropertyUpdate,
                              id_,
                              animation->group(),
                              Animation::Opacity,
                              monotonic_time);
         const FloatAnimationCurve* float_animation_curve =
             animation->curve()->ToFloatAnimationCurve();
@@ skipping 671 matching lines @@
                                   animations_.end(),
                                   IsWaitingForDeletion),
                     animations_.end());
 }
 
 void LayerAnimationController::TickAnimations(base::TimeTicks monotonic_time) {
   for (size_t i = 0; i < animations_.size(); ++i) {
     if (animations_[i]->run_state() == Animation::Starting ||
         animations_[i]->run_state() == Animation::Running ||
         animations_[i]->run_state() == Animation::Paused) {
+      if (animations_[i]->NoEffectBeforeAnimation(monotonic_time))
+        continue;
+
       double trimmed =
           animations_[i]->TrimTimeToCurrentIteration(monotonic_time);
 
       switch (animations_[i]->target_property()) {
         case Animation::Transform: {
           const TransformAnimationCurve* transform_animation_curve =
               animations_[i]->curve()->ToTransformAnimationCurve();
           const gfx::Transform transform =
               transform_animation_curve->GetValue(trimmed);
           NotifyObserversTransformAnimated(
@@ skipping 160 matching lines @@
         value_observers_);
     LayerAnimationValueObserver* obs;
     while ((obs = it.GetNext()) != NULL)
       if (obs->IsActive())
         return true;
   }
   return false;
 }
 
 }  // namespace cc