libsparse: Add .clang-format and reformat to google3 style

Bug: 78793464
Test: compiles
Change-Id: I8e44ba77195a12fc2bac7d4276bbc4aa95149b31
diff --git a/libsparse/output_file.h b/libsparse/output_file.h
index 690f610..278430b 100644
--- a/libsparse/output_file.h
+++ b/libsparse/output_file.h
@@ -25,23 +25,19 @@
 
 struct output_file;
 
-struct output_file *output_file_open_fd(int fd, unsigned int block_size, int64_t len,
-		int gz, int sparse, int chunks, int crc);
-struct output_file *output_file_open_callback(
-		int (*write)(void *, const void *, size_t),
-		void *priv, unsigned int block_size, int64_t len, int gz, int sparse,
-		int chunks, int crc);
-int write_data_chunk(struct output_file *out, unsigned int len, void *data);
-int write_fill_chunk(struct output_file *out, unsigned int len,
-		uint32_t fill_val);
-int write_file_chunk(struct output_file *out, unsigned int len,
-		const char *file, int64_t offset);
-int write_fd_chunk(struct output_file *out, unsigned int len,
-		int fd, int64_t offset);
-int write_skip_chunk(struct output_file *out, int64_t len);
-void output_file_close(struct output_file *out);
+struct output_file* output_file_open_fd(int fd, unsigned int block_size, int64_t len, int gz,
+                                        int sparse, int chunks, int crc);
+struct output_file* output_file_open_callback(int (*write)(void*, const void*, size_t), void* priv,
+                                              unsigned int block_size, int64_t len, int gz,
+                                              int sparse, int chunks, int crc);
+int write_data_chunk(struct output_file* out, unsigned int len, void* data);
+int write_fill_chunk(struct output_file* out, unsigned int len, uint32_t fill_val);
+int write_file_chunk(struct output_file* out, unsigned int len, const char* file, int64_t offset);
+int write_fd_chunk(struct output_file* out, unsigned int len, int fd, int64_t offset);
+int write_skip_chunk(struct output_file* out, int64_t len);
+void output_file_close(struct output_file* out);
 
-int read_all(int fd, void *buf, size_t len);
+int read_all(int fd, void* buf, size_t len);
 
 #ifdef __cplusplus
 }