Move webrtc/{base => rtc_base}

webrtc/rtc_base/optional.h

Index: webrtc/rtc_base/optional.h
diff --git a/webrtc/base/optional.h b/webrtc/rtc_base/optional.h
similarity index 99%
copy from webrtc/base/optional.h
copy to webrtc/rtc_base/optional.h
index 4f883a886295fad3867d5293bf60f788dc2366b4..ab3abf9f88248053d8d61a38dd61e998f5703936 100644
--- a/webrtc/base/optional.h
+++ b/webrtc/rtc_base/optional.h
@@ -8,8 +8,8 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#ifndef WEBRTC_BASE_OPTIONAL_H_
-#define WEBRTC_BASE_OPTIONAL_H_
+#ifndef WEBRTC_RTC_BASE_OPTIONAL_H_
+#define WEBRTC_RTC_BASE_OPTIONAL_H_
 
 #include <algorithm>
 #include <memory>
@@ -406,4 +406,4 @@ void PrintTo(const rtc::Optional<T>& opt, std::ostream* os) {
 
 }  // namespace rtc
 
-#endif  // WEBRTC_BASE_OPTIONAL_H_
+#endif  // WEBRTC_RTC_BASE_OPTIONAL_H_