Make platform/image-decoders to use USING_FAST_MALLOC.

third_party/WebKit/Source/platform/image-decoders/jpeg/JPEGImageDecoder.cpp

Index: third_party/WebKit/Source/platform/image-decoders/jpeg/JPEGImageDecoder.cpp
diff --git a/third_party/WebKit/Source/platform/image-decoders/jpeg/JPEGImageDecoder.cpp b/third_party/WebKit/Source/platform/image-decoders/jpeg/JPEGImageDecoder.cpp
index 01b8f3f880c53b73c69c7ec9112396a946a50381..1704bc29a369e42928497664f45dfbc8681c827c 100644
--- a/third_party/WebKit/Source/platform/image-decoders/jpeg/JPEGImageDecoder.cpp
+++ b/third_party/WebKit/Source/platform/image-decoders/jpeg/JPEGImageDecoder.cpp
@@ -82,12 +82,14 @@ const unsigned scaleDenominator = 8;
 namespace blink {
 
 struct decoder_error_mgr {
+    DISALLOW_NEW();
     struct jpeg_error_mgr pub; // "public" fields for IJG library
     int num_corrupt_warnings;  // Counts corrupt warning messages
     jmp_buf setjmp_buffer;     // For handling catastropic errors
 };
 
 struct decoder_source_mgr {
+    DISALLOW_NEW();
     struct jpeg_source_mgr pub; // "public" fields for IJG library
     JPEGImageReader* reader;
 };
@@ -289,8 +291,9 @@ static yuv_subsampling yuvSubsampling(const jpeg_decompress_struct& info)
     return YUV_UNKNOWN;
 }
 
-class JPEGImageReader {
+class JPEGImageReader final {
     USING_FAST_MALLOC(JPEGImageReader);
+    WTF_MAKE_NONCOPYABLE(JPEGImageReader);
 public:
     JPEGImageReader(JPEGImageDecoder* decoder)
         : m_decoder(decoder)