Implement SPDY_EXPORT and SPDY_EXPORT_PRIVATE macros.

net/spdy/core/hpack/hpack_huffman_decoder.h

Index: net/spdy/core/hpack/hpack_huffman_decoder.h
diff --git a/net/spdy/core/hpack/hpack_huffman_decoder.h b/net/spdy/core/hpack/hpack_huffman_decoder.h
index 98205659730aab93ea7b94641ff4a4de29701ce1..d33fa58174f3597da07db36caaa3f772538fefc1 100644
--- a/net/spdy/core/hpack/hpack_huffman_decoder.h
+++ b/net/spdy/core/hpack/hpack_huffman_decoder.h
@@ -8,8 +8,8 @@
 #include <stddef.h>
 #include <stdint.h>
 
-#include "net/base/net_export.h"
 #include "net/spdy/core/hpack/hpack_input_stream.h"
+#include "net/spdy/platform/api/spdy_export.h"
 #include "net/spdy/platform/api/spdy_string.h"
 
 namespace net {
@@ -19,7 +19,7 @@ class HpackHuffmanDecoderPeer;
 
 // Declared as a class to simplify testing.
 // No instances are actually allocated.
-class NET_EXPORT_PRIVATE HpackHuffmanDecoder {
+class SPDY_EXPORT_PRIVATE HpackHuffmanDecoder {
  public:
   typedef uint32_t HuffmanWord;
   typedef size_t HuffmanCodeLength;