Revert "Update mojo sdk to rev 1dc8a9a5db73d3718d99917fadf31f5fb2ebad4f"

third_party/mojo/src/mojo/public/c/environment/logger.h

Index: third_party/mojo/src/mojo/public/c/environment/logger.h
diff --git a/third_party/mojo/src/mojo/public/c/environment/logger.h b/third_party/mojo/src/mojo/public/c/environment/logger.h
index 2a9b617a383d8ab0287ada2648c6db62577488be..c492a66397f9d181ed4231608c3a9696cef662b0 100644
--- a/third_party/mojo/src/mojo/public/c/environment/logger.h
+++ b/third_party/mojo/src/mojo/public/c/environment/logger.h
@@ -30,17 +30,10 @@ const MojoLogLevel MOJO_LOG_LEVEL_FATAL = 3;
 // macros may be built). The functions are thread-safe, except for
 // |SetMinimumLogLevel()| (see below).
 struct MojoLogger {
-  // Logs |message| (which must not be null) at level |log_level| if |log_level|
-  // is at least the current minimum log level. If |log_level| is
-  // |MOJO_LOG_LEVEL_FATAL| (or greater), aborts the application/process.
-  // |source_file| and |source_line| indicate the source file and (1-based) line
-  // number, respectively; they are optional: |source_file| may be null and
-  // |source_line| may be zero (if |source_file| is null, then |source_line| may
-  // be ignored).
-  void (*LogMessage)(MojoLogLevel log_level,
-                     const char* source_file,
-                     uint32_t source_line,
-                     const char* message);
+  // Logs |message| at level |log_level| if |log_level| is at least the current
+  // minimum log level. If |log_level| is |MOJO_LOG_LEVEL_FATAL| (or greater),
+  // aborts the application/process.
+  void (*LogMessage)(MojoLogLevel log_level, const char* message);
 
   // Gets the minimum log level (see above), which will always be at most
   // |MOJO_LOG_LEVEL_FATAL|. (Though |LogMessage()| will automatically avoid