Convert //third_party from scoped_ptr to std::unique_ptr

third_party/zlib/google/zip_reader.cc

Index: third_party/zlib/google/zip_reader.cc
diff --git a/third_party/zlib/google/zip_reader.cc b/third_party/zlib/google/zip_reader.cc
index 6be6dc1e64ca48183e5e98c0c207a47f5227f7a1..d9df963858b25f7034cba6b752ef09027be96272 100644
--- a/third_party/zlib/google/zip_reader.cc
+++ b/third_party/zlib/google/zip_reader.cc
@@ -303,7 +303,7 @@ bool ZipReader::ExtractCurrentEntry(WriterDelegate* delegate) const {
     return false;
 
   bool success = true;  // This becomes false when something bad happens.
-  scoped_ptr<char[]> buf(new char[internal::kZipBufSize]);
+  std::unique_ptr<char[]> buf(new char[internal::kZipBufSize]);
   while (true) {
     const int num_bytes_read = unzReadCurrentFile(zip_file_, buf.get(),
                                                   internal::kZipBufSize);