Add UseCounter for HTML Imports

Source/core/html/imports/HTMLImportsController.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/html/imports/HTMLImportsController.h"
 
 #include "core/dom/Document.h"
 #include "core/fetch/ResourceFetcher.h"
 #include "core/frame/LocalFrame.h"
+#include "core/frame/UseCounter.h"
 #include "core/html/imports/HTMLImportChild.h"
 #include "core/html/imports/HTMLImportChildClient.h"
 #include "core/html/imports/HTMLImportLoader.h"
 #include "core/html/imports/HTMLImportTreeRoot.h"
 
 namespace WebCore {
 
 void HTMLImportsController::provideTo(Document& master)
 {
     DEFINE_STATIC_LOCAL(const char*, name, ("HTMLImportsController"));
     OwnPtrWillBeRawPtr<HTMLImportsController> controller = adoptPtrWillBeNoop(new HTMLImportsController(master));
     master.setImportsController(controller.get());
     DocumentSupplement::provideTo(master, name, controller.release());
 }
 
 HTMLImportsController::HTMLImportsController(Document& master)
     : m_root(HTMLImportTreeRoot::create(&master))
 {
+    UseCounter::count(master, UseCounter::HTMLImports);
 }
 
 HTMLImportsController::~HTMLImportsController()
 {
 #if !ENABLE(OILPAN)
     ASSERT(!m_root);
 #endif
 }
 
 #if !ENABLE(OILPAN)
@@ skipping 105 matching lines @@
 }
 
 void HTMLImportsController::trace(Visitor* visitor)
 {
     visitor->trace(m_root);
     visitor->trace(m_loaders);
     DocumentSupplement::trace(visitor);
 }
 
 } // namespace WebCore