[instrumentation] Introduce InspectorTraceEvents agent

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

Index: third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp
diff --git a/third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp b/third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp
index d926e08a347123548918be217f76fe7c13191029..bc65eaaec2cdbe3c3a3a94f8f782a85ac1cbdc76 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp
+++ b/third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp
@@ -804,7 +804,8 @@ void InspectorNetworkAgent::didReceiveEncodedDataLength(
 
 void InspectorNetworkAgent::didFinishLoading(unsigned long identifier,
                                              double monotonicFinishTime,
-                                             int64_t encodedDataLength) {
+                                             int64_t encodedDataLength,
+                                             int64_t decodedBodyLength) {
   String requestId = IdentifiersFactory::requestId(identifier);
   NetworkResourcesData::ResourceData const* resourceData =
       m_resourcesData->data(requestId);
@@ -839,8 +840,8 @@ void InspectorNetworkAgent::didReceiveCORSRedirectResponse(
     Resource* resource) {
   // Update the response and finish loading
   didReceiveResourceResponse(frame, identifier, loader, response, resource);
-  didFinishLoading(identifier, 0,
-                   WebURLLoaderClient::kUnknownEncodedDataLength);
+  didFinishLoading(identifier, 0, WebURLLoaderClient::kUnknownEncodedDataLength,
+                   0);
 }
 
 void InspectorNetworkAgent::didFailLoading(unsigned long identifier,