Fix incorrect usage of StringImpl::sizeInBytes.

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/loader/BeaconLoader.h"
 
 #include "core/dom/DOMArrayBufferView.h"
 #include "core/dom/Document.h"
 #include "core/fetch/CrossOriginAccessControl.h"
 #include "core/fetch/FetchContext.h"
@@ skipping 27 matching lines @@
 
 class BeaconString final : public Beacon {
 public:
     explicit BeaconString(const String& data)
         : m_data(data)
     {
     }
 
     unsigned long long size() const override
     {
-        return m_data.sizeInBytes();
+        return m_data.charactersSizeInBytes();
     }
 
     bool serialize(ResourceRequest& request, int, int&) const override
     {
         RefPtr<EncodedFormData> entityBody = EncodedFormData::create(m_data.utf8());
         request.setHTTPBody(entityBody);
         request.setHTTPContentType(getContentType());
         return true;
     }
 
@@ skipping 207 matching lines @@
         dispose();
         // Signal WebURLLoader that the redirect musn't be followed.
         passedNewRequest = WebURLRequest();
         return;
     }
     // FIXME: http://crbug.com/427429 is needed to correctly propagate
     // updates of Origin: following this successful redirect.
 }
 
 } // namespace blink