[instrumentation] Introduce InspectorTraceEvents agent

third_party/WebKit/Source/core/inspector/InspectorTraceEvents.cpp

Index: third_party/WebKit/Source/core/inspector/InspectorTraceEvents.cpp
diff --git a/third_party/WebKit/Source/core/inspector/InspectorTraceEvents.cpp b/third_party/WebKit/Source/core/inspector/InspectorTraceEvents.cpp
index 0bc944802575e667315ed993cb24b782d1ee8517..79d441d42da26f94383f52b9c86716a05ed98663 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorTraceEvents.cpp
+++ b/third_party/WebKit/Source/core/inspector/InspectorTraceEvents.cpp
@@ -63,6 +63,73 @@ void setCallStack(TracedValue* value) {
   v8::Isolate::GetCurrent()->GetCpuProfiler()->CollectSample();
 }
 
+void InspectorTraceEvents::init(InstrumentingAgents* instrumentingAgents,
+                                protocol::UberDispatcher*,
+                                protocol::DictionaryValue*) {
+  m_instrumentingAgents = instrumentingAgents;
+  m_instrumentingAgents->addInspectorTraceEvents(this);
+}
+
+void InspectorTraceEvents::dispose() {
+  m_instrumentingAgents->removeInspectorTraceEvents(this);
+  m_instrumentingAgents = nullptr;
+}
+
+DEFINE_TRACE(InspectorTraceEvents) {
+  visitor->trace(m_instrumentingAgents);
+  InspectorAgent::trace(visitor);
+}
+
+void InspectorTraceEvents::willSendRequest(
+    LocalFrame* frame,
+    unsigned long identifier,
+    DocumentLoader*,
+    ResourceRequest& request,
+    const ResourceResponse& redirectResponse,
+    const FetchInitiatorInfo&) {
+  TRACE_EVENT_INSTANT1(
+      "devtools.timeline", "ResourceSendRequest", TRACE_EVENT_SCOPE_THREAD,
+      "data", InspectorSendRequestEvent::data(identifier, frame, request));
+}
+
+void InspectorTraceEvents::didReceiveResourceResponse(
+    LocalFrame* frame,
+    unsigned long identifier,
+    DocumentLoader*,
+    const ResourceResponse& response,
+    Resource*) {
+  TRACE_EVENT_INSTANT1(
+      "devtools.timeline", "ResourceReceiveResponse", TRACE_EVENT_SCOPE_THREAD,
+      "data", InspectorReceiveResponseEvent::data(identifier, frame, response));
+}
+
+void InspectorTraceEvents::didReceiveData(LocalFrame* frame,
+                                          unsigned long identifier,
+                                          const char* data,
+                                          int encodedDataLength) {
+  TRACE_EVENT_INSTANT1(
+      "devtools.timeline", "ResourceReceivedData", TRACE_EVENT_SCOPE_THREAD,
+      "data",
+      InspectorReceiveDataEvent::data(identifier, frame, encodedDataLength));
+}
+
+void InspectorTraceEvents::didFinishLoading(unsigned long identifier,
+                                            double finishTime,
+                                            int64_t encodedDataLength,
+                                            int64_t decodedBodyLength) {
+  TRACE_EVENT_INSTANT1(
+      "devtools.timeline", "ResourceFinish", TRACE_EVENT_SCOPE_THREAD, "data",
+      InspectorResourceFinishEvent::data(identifier, finishTime, false,
+                                         encodedDataLength, decodedBodyLength));
+}
+
+void InspectorTraceEvents::didFailLoading(unsigned long identifier,
+                                          const ResourceError&) {
+  TRACE_EVENT_INSTANT1(
+      "devtools.timeline", "ResourceFinish", TRACE_EVENT_SCOPE_THREAD, "data",
+      InspectorResourceFinishEvent::data(identifier, 0, true, 0, 0));
+}
+
 namespace {
 
 void setNodeInfo(TracedValue* value,