Move webrtc/{base => rtc_base}

webrtc/rtc_base/md5.h

 /*
  * This is the header file for the MD5 message-digest algorithm.
  * The algorithm is due to Ron Rivest.  This code was
  * written by Colin Plumb in 1993, no copyright is claimed.
  * This code is in the public domain; do with it what you wish.
  *
  * Equivalent code is available from RSA Data Security, Inc.
  * This code has been tested against that, and is equivalent,
  * except that you don't need to include two pages of legalese
  * with every copy.
  * To compute the message digest of a chunk of bytes, declare an
  * MD5Context structure, pass it to MD5Init, call MD5Update as
  * needed on buffers full of bytes, and then call MD5Final, which
  * will fill a supplied 16-byte array with the digest.
  *
  */
 
 // Changes(fbarchard): Ported to C++ and Google style guide.
 // Made context first parameter in MD5Final for consistency with Sha1.
 // Changes(hellner): added rtc namespace
 // Changes(pbos): Reverted types back to uint32(8)_t with _t suffix.
 
-#ifndef WEBRTC_BASE_MD5_H_
-#define WEBRTC_BASE_MD5_H_
+#ifndef WEBRTC_RTC_BASE_MD5_H_
+#define WEBRTC_RTC_BASE_MD5_H_
 
 #include <stdint.h>
 #include <stdlib.h>
 
 namespace rtc {
 
 struct MD5Context {
   uint32_t buf[4];
   uint32_t bits[2];
   uint32_t in[16];
 };
 
 void MD5Init(MD5Context* context);
 void MD5Update(MD5Context* context, const uint8_t* data, size_t len);
 void MD5Final(MD5Context* context, uint8_t digest[16]);
 void MD5Transform(uint32_t buf[4], const uint32_t in[16]);
 
 }  // namespace rtc
 
-#endif  // WEBRTC_BASE_MD5_H_
+#endif  // WEBRTC_RTC_BASE_MD5_H_