Use base/logging from chrome/browser/sync. Add a macro to libjingle's

third_party/libjingle/files/talk/base/logging.h

 /*
  * libjingle
  * Copyright 2004--2005, Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without 
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice, 
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 47 matching lines @@
 //     KLABEL(SOME_OTHER_ERROR),
 //     ...
 //     LASTLABEL
 //   }
 //
 //   int err = LibraryFunc();
 //   LOG(LS_ERROR) << "LibraryFunc returned: "
 //                 << ErrorName(err, LIBRARY_ERRORS);
 
 struct ConstantLabel { int value; const char * label; };
+
+#if defined(SAFE_TO_DEFINE_TALK_BASE_LOGGING_MACROS)
 #define KLABEL(x) { x, #x }
 #define TLABEL(x,y) { x, y }
 #define LASTLABEL { 0, 0 }
+#endif // defined(SAFE_TO_DEFINE_TALK_BASE_LOGGING_MACROS)
 
 const char * FindLabel(int value, const ConstantLabel entries[]);
 std::string ErrorName(int err, const ConstantLabel* err_table);
 
 //////////////////////////////////////////////////////////////////////
 
 // Note that the non-standard LoggingSeverity aliases exist because they are
 // still in broad use.  The meanings of the levels are:
 //  LS_SENSITIVE: Information which should only be logged with the consent
 //   of the user, due to privacy concerns.
@@ skipping 105 matching lines @@
 // multiple calls to LogMultiline.  Otherwise, pass NULL.
 void LogMultiline(LoggingSeverity level, const char* label, bool input,
                   const char * data, size_t len, bool hex_mode,
                   LogMultilineState* state);
 
 //////////////////////////////////////////////////////////////////////
 // Macros which automatically disable logging when LOGGING == 0
 //////////////////////////////////////////////////////////////////////
 
 // If LOGGING is not explicitly defined, default to enabled in debug mode
+#if defined(SAFE_TO_DEFINE_TALK_BASE_LOGGING_MACROS)
 #if !defined(LOGGING)
 #if defined(_DEBUG) && !defined(NDEBUG)
 #define LOGGING 1
 #else
 #define LOGGING 0
 #endif
 #endif  // !defined(LOGGING)
 
 #ifndef LOG
 #if LOGGING
@@ skipping 75 matching lines @@
 #define LOG_GLE(sev) \
   while (false) talk_base::LogMessage(NULL, 0, talk_base::sev, \
                                       talk_base::ERRCTX_HRESULT, 0).stream()
 #define LOG_GLEM(sev, mod) \
   while (false) talk_base::LogMessage(NULL, 0, talk_base::sev, \
                                       talk_base::ERRCTX_HRESULT, 0).stream()
 #endif  // WIN32
 
 #endif  // !LOGGING
 #endif  // LOG
+#endif  // defined(SAFE_TO_DEFINE_TALK_BASE_LOGGING_MACROS)
 
 //////////////////////////////////////////////////////////////////////
 
 } // talk_base
 
 #endif  // TALK_BASE_LOGGING_H__