Allow explicit conversion operators and implement WTF::OwnPtr::operator bool.

third_party/WebKit/Source/core/css/BinaryDataFontFaceSource.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/css/BinaryDataFontFaceSource.h"
 
 #include "platform/SharedBuffer.h"
 #include "platform/fonts/FontCustomPlatformData.h"
 #include "platform/fonts/FontDescription.h"
 #include "platform/fonts/SimpleFontData.h"
 
 namespace blink {
 
 BinaryDataFontFaceSource::BinaryDataFontFaceSource(SharedBuffer* data, String& otsParseMessage)
     : m_customPlatformData(FontCustomPlatformData::create(data, otsParseMessage))
 {
 }
 
 BinaryDataFontFaceSource::~BinaryDataFontFaceSource()
 {
 }
 
 bool BinaryDataFontFaceSource::isValid() const
 {
-    return m_customPlatformData;
+    return m_customPlatformData.get();
 }
 
 PassRefPtr<SimpleFontData> BinaryDataFontFaceSource::createFontData(const FontDescription& fontDescription)
 {
     return SimpleFontData::create(
         m_customPlatformData->fontPlatformData(fontDescription.effectiveFontSize(),
             fontDescription.isSyntheticBold(), fontDescription.isSyntheticItalic(),
             fontDescription.orientation()), CustomFontData::create());
 }
 
 } // namespace blink