Revert of Remove typedefs.h from webrtc/ root (part 1)

webrtc/rtc_base/checks.h

 /*
  *  Copyright 2006 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #ifndef WEBRTC_RTC_BASE_CHECKS_H_
 #define WEBRTC_RTC_BASE_CHECKS_H_
 
+#include "webrtc/typedefs.h"
+
 // If you for some reson need to know if DCHECKs are on, test the value of
 // RTC_DCHECK_IS_ON. (Test its value, not if it's defined; it'll always be
 // defined, to either a true or a false value.)
 #if !defined(NDEBUG) || defined(DCHECK_ALWAYS_ON)
 #define RTC_DCHECK_IS_ON 1
 #else
 #define RTC_DCHECK_IS_ON 0
 #endif
 
-// Annotate a function that will not return control flow to the caller.
-#if defined(_MSC_VER)
-#define RTC_NO_RETURN __declspec(noreturn)
-#elif defined(__GNUC__)
-#define RTC_NO_RETURN __attribute__ ((__noreturn__))
-#else
-#define RTC_NO_RETURN
-#endif
-
 #ifdef __cplusplus
 extern "C" {
 #endif
-RTC_NO_RETURN
-    void rtc_FatalMessage(const char* file, int line, const char* msg);
+NO_RETURN void rtc_FatalMessage(const char* file, int line, const char* msg);
 #ifdef __cplusplus
 }  // extern "C"
 #endif
 
 #ifdef __cplusplus
 // C++ version.
 
 #include <sstream>
 #include <string>
 
@@ skipping 186 matching lines @@
 // TODO(ajm): Consider adding RTC_NOTIMPLEMENTED macro when
 // base/logging.h and system_wrappers/logging.h are consolidated such that we
 // can match the Chromium behavior.
 
 // Like a stripped-down LogMessage from logging.h, except that it aborts.
 class FatalMessage {
  public:
   FatalMessage(const char* file, int line);
   // Used for RTC_CHECK_EQ(), etc. Takes ownership of the given string.
   FatalMessage(const char* file, int line, std::string* result);
-  RTC_NO_RETURN ~FatalMessage();
+  NO_RETURN ~FatalMessage();
 
   std::ostream& stream() { return stream_; }
 
  private:
   void Init(const char* file, int line);
 
   std::ostringstream stream_;
 };
 
 // Performs the integer division a/b and returns the result. CHECKs that the
@@ skipping 34 matching lines @@
 #define RTC_DCHECK_EQ(a, b) RTC_DCHECK((a) == (b))
 #define RTC_DCHECK_NE(a, b) RTC_DCHECK((a) != (b))
 #define RTC_DCHECK_LE(a, b) RTC_DCHECK((a) <= (b))
 #define RTC_DCHECK_LT(a, b) RTC_DCHECK((a) < (b))
 #define RTC_DCHECK_GE(a, b) RTC_DCHECK((a) >= (b))
 #define RTC_DCHECK_GT(a, b) RTC_DCHECK((a) > (b))
 
 #endif  // __cplusplus
 
 #endif  // WEBRTC_RTC_BASE_CHECKS_H_