Add instance counters of Resource and AudioNode, and expose them via WebLeakDetector.

Source/web/WebLeakDetector.cpp

Index: Source/web/WebLeakDetector.cpp
diff --git a/Source/web/WebLeakDetector.cpp b/Source/web/WebLeakDetector.cpp
index d5af02963b14a540f6dcea55d5bff89e708da2e6..f0461b037e1cb9151fe036e39d62a04f942bf6c8 100644
--- a/Source/web/WebLeakDetector.cpp
+++ b/Source/web/WebLeakDetector.cpp
@@ -39,6 +39,7 @@
 #include "core/fetch/ResourceFetcher.h"
 #include "core/inspector/InspectorCounters.h"
 #include "core/rendering/RenderObject.h"
+#include "modules/webaudio/AudioNode.h"
 #include "platform/Timer.h"
 #include "public/web/WebDocument.h"
 #include "public/web/WebLocalFrame.h"
@@ -129,9 +130,11 @@ void WebLeakDetectorImpl::delayedReport(Timer<WebLeakDetectorImpl>*)
     ASSERT(m_client);
 
     WebLeakDetectorClient::Result result;
+    result.numberOfLiveAudioNodes = AudioNode::instanceCount();
     result.numberOfLiveDocuments = InspectorCounters::counterValue(InspectorCounters::DocumentCounter);
     result.numberOfLiveNodes = InspectorCounters::counterValue(InspectorCounters::NodeCounter);
     result.numberOfLiveRenderObjects = RenderObject::instanceCount();
+    result.numberOfLiveResources = Resource::instanceCount();
 
     m_client->onLeakDetectionComplete(result);