Measure usage of image/media/plugin/text documents

third_party/WebKit/Source/core/loader/SinkDocument.cpp

Index: third_party/WebKit/Source/core/loader/SinkDocument.cpp
diff --git a/third_party/WebKit/Source/core/loader/SinkDocument.cpp b/third_party/WebKit/Source/core/loader/SinkDocument.cpp
index e96d3593e94bb0a3028ec7f8baff73128a2a7aa5..41e3d8586531d71b1702494def901ecf4707740a 100644
--- a/third_party/WebKit/Source/core/loader/SinkDocument.cpp
+++ b/third_party/WebKit/Source/core/loader/SinkDocument.cpp
@@ -26,6 +26,7 @@
 #include "core/loader/SinkDocument.h"
 
 #include "core/dom/RawDataDocumentParser.h"
+#include "core/frame/UseCounter.h"
 
 namespace blink {
 
@@ -51,6 +52,9 @@ SinkDocument::SinkDocument(const DocumentInit& initializer)
 {
     setCompatibilityMode(QuirksMode);
     lockCompatibilityMode();
+    UseCounter::count(*this, UseCounter::SinkDocument);
+    if (ownerElement())
+        UseCounter::count(*this, UseCounter::SinkDocumentInFrame);
 }
 
 DocumentParser* SinkDocument::createParser()