Make the fuchsia mojo/public repo the source of truth.

mojo/public/cpp/environment/logging.h

-// Copyright 2014 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.
-
-// Logging macros, similar to Chromium's base/logging.h, except with |MOJO_|
-// prefixes and missing some features (notably |CHECK_EQ()|, etc.).
-
-// TODO(vtl): It's weird that this is in the environment directory, since its
-// implementation (in environment/lib) is meant to be used by any implementation
-// of the environment.
-
-#ifndef MOJO_PUBLIC_CPP_ENVIRONMENT_LOGGING_H_
-#define MOJO_PUBLIC_CPP_ENVIRONMENT_LOGGING_H_
-
-#include <mojo/environment/logger.h>
-
-#include <sstream>
-
-#include "mojo/public/cpp/environment/environment.h"
-#include "mojo/public/cpp/system/macros.h"
-
-#define MOJO_LOG_STREAM(level)                                             \
-  ::mojo::internal::LogMessage(MOJO_LOG_LEVEL_##level, __FILE__, __LINE__) \
-      .stream()
-
-#define MOJO_LAZY_LOG_STREAM(level, condition) \
-  !(condition) ? (void)0                       \
-               : ::mojo::internal::VoidifyOstream() & MOJO_LOG_STREAM(level)
-
-#define MOJO_SHOULD_LOG(level) \
-  (MOJO_LOG_LEVEL_##level >=   \
-   ::mojo::Environment::GetDefaultLogger()->GetMinimumLogLevel())
-
-#define MOJO_LOG(level) MOJO_LAZY_LOG_STREAM(level, MOJO_SHOULD_LOG(level))
-
-#define MOJO_LOG_IF(level, condition) \
-  MOJO_LAZY_LOG_STREAM(level, MOJO_SHOULD_LOG(level) && (condition))
-
-#define MOJO_CHECK(condition)                                                  \
-  MOJO_LAZY_LOG_STREAM(FATAL, !(condition)) << "Check failed: " #condition "." \
-                                                                           " "
-
-// Note: For non-debug builds, |MOJO_DLOG_IF()| *eliminates* (i.e., doesn't
-// compile) the condition, whereas |MOJO_DCHECK()| "neuters" the condition
-// (i.e., compiles, but doesn't evaluate).
-#ifdef NDEBUG
-#define MOJO_DLOG(level) MOJO_LAZY_LOG_STREAM(level, false)
-#define MOJO_DLOG_IF(level, condition) MOJO_LAZY_LOG_STREAM(level, false)
-#else
-#define MOJO_DLOG(level) MOJO_LOG(level)
-#define MOJO_DLOG_IF(level, condition) MOJO_LOG_IF(level, condition)
-#endif  // NDEBUG
-
-#if defined(NDEBUG) && !defined(DCHECK_ALWAYS_ON)
-#define MOJO_DCHECK(condition) \
-  MOJO_LAZY_LOG_STREAM(FATAL, false ? !(condition) : false)
-#else
-#define MOJO_DCHECK(condition) MOJO_CHECK(condition)
-#endif  // NDEBUG && !defined(DCHECK_ALWAYS_ON)
-
-namespace mojo {
-namespace internal {
-
-class LogMessage {
- public:
-  LogMessage(MojoLogLevel log_level, const char* file, int line);
-  ~LogMessage();
-
-  std::ostream& stream() { return stream_; }
-
- private:
-  const MojoLogLevel log_level_;
-  const char* const file_;
-  const int line_;
-  std::ostringstream stream_;
-
-  MOJO_DISALLOW_COPY_AND_ASSIGN(LogMessage);
-};
-
-// Used to ignore a stream.
-struct VoidifyOstream {
-  // Use & since it has precedence lower than << but higher than ?:.
-  void operator&(std::ostream&) {}
-};
-
-}  // namespace internal
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_CPP_ENVIRONMENT_LOGGING_H_