Move webrtc/{base => rtc_base}

webrtc/base/ignore_wundef.h

Index: webrtc/base/ignore_wundef.h
diff --git a/webrtc/base/ignore_wundef.h b/webrtc/base/ignore_wundef.h
index b5bf7f79b66fce21abcf804367a31c061cb488b4..fdfba9b84a75f2f18f5c3822e2a93691a6df2903 100644
--- a/webrtc/base/ignore_wundef.h
+++ b/webrtc/base/ignore_wundef.h
@@ -11,23 +11,9 @@
 #ifndef WEBRTC_BASE_IGNORE_WUNDEF_H_
 #define WEBRTC_BASE_IGNORE_WUNDEF_H_
 
-// If a header file uses #if on possibly undefined macros (and it's for some
-// reason not possible to just fix the header file), include it like this:
-//
-//   RTC_PUSH_IGNORING_WUNDEF()
-//   #include "misbehaving_header.h"
-//   RTC_POP_IGNORING_WUNDEF()
-//
-// This will cause the compiler to not emit -Wundef warnings for that file.
 
-#ifdef __clang__
-#define RTC_PUSH_IGNORING_WUNDEF() \
-  _Pragma("clang diagnostic push") \
-      _Pragma("clang diagnostic ignored \"-Wundef\"")
-#define RTC_POP_IGNORING_WUNDEF() _Pragma("clang diagnostic pop")
-#else
-#define RTC_PUSH_IGNORING_WUNDEF()
-#define RTC_POP_IGNORING_WUNDEF()
-#endif  // __clang__
+// This header is deprecated and is just left here temporarily during
+// refactoring. See https://bugs.webrtc.org/7634 for more details.
+#include "webrtc/rtc_base/ignore_wundef.h"
 
 #endif  // WEBRTC_BASE_IGNORE_WUNDEF_H_