Replace WTF::Optional the base::Optional implementation.

third_party/WebKit/Source/platform/graphics/gpu/WebGLImageConversion.h

 // 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.
 
 #ifndef WebGLImageConversion_h
 #define WebGLImageConversion_h
 
 #include "platform/PlatformExport.h"
 #include "platform/graphics/Image.h"
 #include "platform/graphics/skia/ImagePixelLocker.h"
@@ skipping 110 matching lines @@
         GLint alignment;
         GLint rowLength;
         GLint imageHeight;
         GLint skipPixels;
         GLint skipRows;
         GLint skipImages;
     };
 
     class PLATFORM_EXPORT ImageExtractor final {
         STACK_ALLOCATED();
+        WTF_MAKE_NONCOPYABLE(ImageExtractor);
+
     public:
         ImageExtractor(Image*, ImageHtmlDomSource, bool premultiplyAlpha, bool ignoreGammaAndColorProfile);
 
         const void* imagePixelData() { return m_imagePixelLocker ? m_imagePixelLocker->pixels() : nullptr; }
         unsigned imageWidth() { return m_imageWidth; }
         unsigned imageHeight() { return m_imageHeight; }
         DataFormat imageSourceFormat() { return m_imageSourceFormat; }
         AlphaOp imageAlphaOp() { return m_alphaOp; }
         unsigned imageSourceUnpackAlignment() { return m_imageSourceUnpackAlignment; }
     private:
@@ skipping 67 matching lines @@
     // A sourceUnpackAlignment of zero indicates that the source
     // data is tightly packed. Non-zero values may take a slow path.
     // Destination data will have no gaps between rows.
     // Implemented in GraphicsContext3DImagePacking.cpp
     static bool packPixels(const uint8_t* sourceData, DataFormat sourceDataFormat, unsigned width, unsigned height, unsigned sourceUnpackAlignment, unsigned destinationFormat, unsigned destinationType, AlphaOp, void* destinationData, bool flipY);
 };
 
 } // namespace blink
 
 #endif // WebGLImageConversion_h