DevTools: add instrumentation for deferred canvas rasterization

Source/core/inspector/InspectorController.cpp

Index: Source/core/inspector/InspectorController.cpp
diff --git a/Source/core/inspector/InspectorController.cpp b/Source/core/inspector/InspectorController.cpp
index 9e59ddca7a4060e057a60afe6b4d6a0d8a71de66..c3199afd103dba175eba1aa7892d1f20ff2ccfc1 100644
--- a/Source/core/inspector/InspectorController.cpp
+++ b/Source/core/inspector/InspectorController.cpp
@@ -108,10 +108,12 @@ InspectorController::InspectorController(Page* page, InspectorClient* inspectorC
     m_memoryAgent = memoryAgentPtr.get();
     m_agents.append(memoryAgentPtr.release());
 
-    m_agents.append(InspectorTimelineAgent::create(m_instrumentingAgents.get(), pageAgent, m_memoryAgent, domAgent, m_state.get(), InspectorTimelineAgent::PageInspector,
-       inspectorClient));
-    m_agents.append(InspectorApplicationCacheAgent::create(m_instrumentingAgents.get(), m_state.get(), pageAgent));
+    OwnPtr<InspectorTimelineAgent> timelineAgentPtr(InspectorTimelineAgent::create(m_instrumentingAgents.get(), pageAgent, m_memoryAgent, domAgent, m_state.get(),
+        InspectorTimelineAgent::PageInspector, inspectorClient));
+    m_timelineAgent = timelineAgentPtr.get();
+    m_agents.append(timelineAgentPtr.release());
 
+    m_agents.append(InspectorApplicationCacheAgent::create(m_instrumentingAgents.get(), m_state.get(), pageAgent));
     m_agents.append(InspectorResourceAgent::create(m_instrumentingAgents.get(), pageAgent, inspectorClient, m_state.get()));
 
     PageScriptDebugServer* pageScriptDebugServer = &PageScriptDebugServer::shared();
@@ -243,6 +245,11 @@ void InspectorController::setProcessId(long processId)
     IdentifiersFactory::setProcessId(processId);
 }
 
+void InspectorController::setLayerTreeId(int id)
+{
+    m_timelineAgent->setLayerTreeId(id);
+}
+
 void InspectorController::webViewResized(const IntSize& size)
 {
     if (InspectorPageAgent* pageAgent = m_instrumentingAgents->inspectorPageAgent())