File API: Add a use counter for nonstandard 'endings' option

third_party/WebKit/Source/core/fileapi/Blob.cpp

 /*
  * Copyright (C) 2010 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 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "core/fileapi/Blob.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/dom/DOMURL.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/fileapi/BlobPropertyBag.h"
+#include "core/frame/UseCounter.h"
 #include "platform/blob/BlobRegistry.h"
 #include "platform/blob/BlobURL.h"
 
 namespace blink {
 
 namespace {
 
 class BlobURLRegistry final : public URLRegistry {
 public:
     void registerURL(SecurityOrigin*, const KURL&, URLRegistrable*) override;
@@ skipping 30 matching lines @@
     : m_blobDataHandle(dataHandle)
     , m_hasBeenClosed(false)
 {
 }
 
 Blob::~Blob()
 {
 }
 
 // static
-Blob* Blob::create(const HeapVector<ArrayBufferOrArrayBufferViewOrBlobOrString>& blobParts, const BlobPropertyBag& options, ExceptionState& exceptionState)
+Blob* Blob::create(ExecutionContext* context, const HeapVector<ArrayBufferOrArrayBufferViewOrBlobOrString>& blobParts, const BlobPropertyBag& options, ExceptionState& exceptionState)
 {
     ASSERT(options.hasType());
     if (!options.type().containsOnlyASCII()) {
         exceptionState.throwDOMException(SyntaxError, "The 'type' property must consist of ASCII characters.");
         return nullptr;
     }
 
     ASSERT(options.hasEndings());
     bool normalizeLineEndingsToNative = options.endings() == "native";
+    if (normalizeLineEndingsToNative)
+        UseCounter::count(context, UseCounter::FileAPINativeLineEndings);
 
     OwnPtr<BlobData> blobData = BlobData::create();
     blobData->setContentType(options.type().lower());
 
     populateBlobData(blobData.get(), blobParts, normalizeLineEndingsToNative);
 
     long long blobSize = blobData->length();
     return new Blob(BlobDataHandle::create(blobData.release(), blobSize));
 }
 
@@ skipping 77 matching lines @@
 {
     blobData.appendBlob(m_blobDataHandle, 0, m_blobDataHandle->size());
 }
 
 URLRegistry& Blob::registry() const
 {
     return BlobURLRegistry::registry();
 }
 
 } // namespace blink