Roll forward to cl/338482889

Signed-off-by: Alexey Polyudov <apolyudov@google.com>
Change-Id: I9850950db8bd84f0904ea1a413151887f52098cf

cpp/platform/impl/g3/log_message.h

@@ -0,0 +1,30 @@
+#ifndef PLATFORM_IMPL_G3_LOG_MESSAGE_H_
+#define PLATFORM_IMPL_G3_LOG_MESSAGE_H_
+
+#include "base/logging.h"
+#include "platform/api/log_message.h"
+
+namespace location {
+namespace nearby {
+namespace g3 {
+
+// See documentation in
+// https://source.corp.google.com/piper///depot/google3/platform/api/log_message.h
+class LogMessage : public api::LogMessage {
+ public:
+  LogMessage(const char* file, int line, Severity severity);
+  ~LogMessage() override;
+
+  void Print(const char* format, ...) override;
+
+  std::ostream& Stream() override;
+
+ private:
+  absl::LogStreamer log_streamer_;
+};
+
+}  // namespace g3
+}  // namespace nearby
+}  // namespace location
+
+#endif  // PLATFORM_IMPL_G3_LOG_MESSAGE_H_