Make NOTIMPLEMENTED_POLICY=0 actually work.

base/logging.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_LOGGING_H_
 #define BASE_LOGGING_H_
 #pragma once
 
 #include <cassert>
 #include <string>
@@ skipping 946 matching lines @@
 
 #if defined(COMPILER_GCC)
 // On Linux, with GCC, we can use __PRETTY_FUNCTION__ to get the demangled name
 // of the current function in the NOTIMPLEMENTED message.
 #define NOTIMPLEMENTED_MSG "Not implemented reached in " << __PRETTY_FUNCTION__
 #else
 #define NOTIMPLEMENTED_MSG "NOT IMPLEMENTED"
 #endif
 
 #if NOTIMPLEMENTED_POLICY == 0
-#define NOTIMPLEMENTED() ;
+#define NOTIMPLEMENTED() EAT_STREAM_PARAMETERS
 #elif NOTIMPLEMENTED_POLICY == 1
 // TODO, figure out how to generate a warning
 #define NOTIMPLEMENTED() COMPILE_ASSERT(false, NOT_IMPLEMENTED)
 #elif NOTIMPLEMENTED_POLICY == 2
 #define NOTIMPLEMENTED() COMPILE_ASSERT(false, NOT_IMPLEMENTED)
 #elif NOTIMPLEMENTED_POLICY == 3
 #define NOTIMPLEMENTED() NOTREACHED()
 #elif NOTIMPLEMENTED_POLICY == 4
 #define NOTIMPLEMENTED() LOG(ERROR) << NOTIMPLEMENTED_MSG
 #elif NOTIMPLEMENTED_POLICY == 5
 #define NOTIMPLEMENTED() do {\
   static int count = 0;\
   LOG_IF(ERROR, 0 == count++) << NOTIMPLEMENTED_MSG;\
 } while(0)
 #endif
 
 namespace base {
 
 template <typename STRING_TYPE> class BasicStringPiece;
 typedef BasicStringPiece<std::string> StringPiece;
 
 // Allows StringPiece to be logged.
 BASE_EXPORT std::ostream& operator<<(std::ostream& o, const StringPiece& piece);
 
 }  // namespace base
 
 #endif  // BASE_LOGGING_H_