DevTools: Move usedHeapSize from TimelineEvent into counters.

Source/core/inspector/InspectorTimelineAgent.cpp

Index: Source/core/inspector/InspectorTimelineAgent.cpp
diff --git a/Source/core/inspector/InspectorTimelineAgent.cpp b/Source/core/inspector/InspectorTimelineAgent.cpp
index 5bfb78d1c6d5586d827e697f2f50ebb4667325f9..efaa52a8f095d54eb544a90a2c2f06008a2feb0c 100644
--- a/Source/core/inspector/InspectorTimelineAgent.cpp
+++ b/Source/core/inspector/InspectorTimelineAgent.cpp
@@ -1060,15 +1060,16 @@ static size_t getUsedHeapSize()
 
 void InspectorTimelineAgent::setCounters(TimelineEvent* record)
 {
-    record->setUsedHeapSize(getUsedHeapSize());
-
-    if (m_state->getBoolean(TimelineAgentState::includeCounters) && m_inspectorType == PageInspector) {
-        RefPtr<TypeBuilder::Timeline::Counters> counters = TypeBuilder::Timeline::Counters::create();
+    if (!m_state->getBoolean(TimelineAgentState::includeCounters))
+        return;
+    RefPtr<TypeBuilder::Timeline::Counters> counters = TypeBuilder::Timeline::Counters::create();
+    if (m_inspectorType == PageInspector) {
         counters->setDocuments(InspectorCounters::counterValue(InspectorCounters::DocumentCounter));
         counters->setNodes(InspectorCounters::counterValue(InspectorCounters::NodeCounter));
         counters->setJsEventListeners(InspectorCounters::counterValue(InspectorCounters::JSEventListenerCounter));
-        record->setCounters(counters.release());
     }
+    counters->setJsHeapSizeUsed(static_cast<double>(getUsedHeapSize()));
+    record->setCounters(counters.release());
 }
 
 void InspectorTimelineAgent::setFrameIdentifier(TimelineEvent* record, Frame* frame)