Devtools Animations: Update timeline reset condition

Source/core/inspector/InspectorAnimationAgent.cpp

 // 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 "config.h"
 
 #include "core/inspector/InspectorAnimationAgent.h"
 
 #include "core/animation/Animation.h"
 #include "core/animation/AnimationEffect.h"
@@ skipping 18 matching lines @@
 namespace AnimationAgentState {
 static const char animationAgentEnabled[] = "animationAgentEnabled";
 }
 
 namespace blink {
 
 InspectorAnimationAgent::InspectorAnimationAgent(InspectorPageAgent* pageAgent, InspectorDOMAgent* domAgent)
     : InspectorBaseAgent<InspectorAnimationAgent, InspectorFrontend::Animation>("Animation")
     , m_pageAgent(pageAgent)
     , m_domAgent(domAgent)
+    , m_latestStartTime(std::numeric_limits<double>::min())
 {
 }
 
 void InspectorAnimationAgent::restore()
 {
     if (m_state->getBoolean(AnimationAgentState::animationAgentEnabled)) {
         ErrorString error;
         enable(&error);
     }
 }
@@ skipping 245 matching lines @@
         timing->setDelay(delay);
     }
 }
 
 void InspectorAnimationAgent::didCreateAnimation(Animation* player)
 {
     const String& playerId = String::number(player->sequenceNumber());
     if (m_idToAnimation.get(playerId))
         return;
 
-    // Check threshold
-    double latestStartTime = 0;
-    for (const auto& p : m_idToAnimation.values())
-        latestStartTime = max(latestStartTime, normalizedStartTime(*p));
-
-    bool reset = false;
-    const double threshold = 1000;
-    if (normalizedStartTime(*player) - latestStartTime > threshold) {
-        reset = true;
+    double threshold = 1000;
+    bool reset = normalizedStartTime(*player) - threshold > m_latestStartTime;
+    m_latestStartTime = normalizedStartTime(*player);
+    if (reset) {
         m_idToAnimation.clear();
         m_idToAnimationType.clear();
     }
 
     frontend()->animationPlayerCreated(buildObjectForAnimationPlayer(*player), reset);
 }
 
 void InspectorAnimationAgent::didCancelAnimation(Animation* player)
 {
     const String& playerId = String::number(player->sequenceNumber());
@@ skipping 37 matching lines @@
 #if ENABLE(OILPAN)
     visitor->trace(m_pageAgent);
     visitor->trace(m_domAgent);
     visitor->trace(m_idToAnimation);
     visitor->trace(m_idToAnimationType);
 #endif
     InspectorBaseAgent::trace(visitor);
 }
 
 }