Add QUIC_EXPORT macros

net/quic/core/quic_simple_buffer_allocator.h

Index: net/quic/core/quic_simple_buffer_allocator.h
diff --git a/net/quic/core/quic_simple_buffer_allocator.h b/net/quic/core/quic_simple_buffer_allocator.h
index addd70dae409eb30c9a7f2dae6005ee8badf4b98..03d8e0e5fe06881b6542bb71dc992400bf2cb71c 100644
--- a/net/quic/core/quic_simple_buffer_allocator.h
+++ b/net/quic/core/quic_simple_buffer_allocator.h
@@ -5,12 +5,12 @@
 #ifndef NET_QUIC_CORE_QUIC_SIMPLE_BUFFER_ALLOCATOR_H_
 #define NET_QUIC_CORE_QUIC_SIMPLE_BUFFER_ALLOCATOR_H_
 
-#include "net/base/net_export.h"
 #include "net/quic/core/quic_buffer_allocator.h"
+#include "net/quic/platform/api/quic_export.h"
 
 namespace net {
 
-class NET_EXPORT_PRIVATE SimpleBufferAllocator : public QuicBufferAllocator {
+class QUIC_EXPORT_PRIVATE SimpleBufferAllocator : public QuicBufferAllocator {
  public:
   char* New(size_t size) override;
   char* New(size_t size, bool flag_enable) override;