Remove dependency on Chromium in diagnostic_logging.h.

base/checks.cc

 /*
  *  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.
  */
 
@@ skipping 91 matching lines @@
   DumpBacktrace();
   fflush(stderr);
   abort();
 }
 
 void FatalMessage::Init(const char* file, int line) {
   stream_ << std::endl << std::endl << "#" << std::endl << "# Fatal error in "
           << file << ", line " << line << std::endl << "# ";
 }
 
-// Refer to comments in checks.h.
-//#ifndef WEBRTC_CHROMIUM_BUILD
-
 // MSVC doesn't like complex extern templates and DLLs.
 #if !defined(COMPILER_MSVC)
 // Explicit instantiations for commonly used comparisons.
 template std::string* MakeCheckOpString<int, int>(
     const int&, const int&, const char* names);
 template std::string* MakeCheckOpString<unsigned long, unsigned long>(
     const unsigned long&, const unsigned long&, const char* names);
 template std::string* MakeCheckOpString<unsigned long, unsigned int>(
     const unsigned long&, const unsigned int&, const char* names);
 template std::string* MakeCheckOpString<unsigned int, unsigned long>(
     const unsigned int&, const unsigned long&, const char* names);
 template std::string* MakeCheckOpString<std::string, std::string>(
     const std::string&, const std::string&, const char* name);
 #endif
 
-//#endif  // WEBRTC_CHROMIUM_BUILD
-
 }  // namespace rtc