logitech-updater:  rename LoggingSettings.log_file

It will be renamed to log_file_path.

BUG=chromium:1094927
TEST=emerge-fizz logitech-updater

Change-Id: I89212a139f2f19dd1b793d58edb79ea2f6d3f5ab
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/logitech-updater/+/2409369
Tested-by: Grace Cham <hscham@chromium.org>
Commit-Queue: Qijiang Fan <fqj@google.com>
Reviewed-by: Qijiang Fan <fqj@google.com>
Reviewed-by: Joe Tessler <jrt@chromium.org>
diff --git a/src/main.cc b/src/main.cc
index afa6385..9c58009 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -412,7 +412,11 @@
     // Logs to file.
     logging::LoggingSettings logging_settings;
     logging_settings.logging_dest = logging::LOG_TO_FILE;
+#if BASE_VER < 780000
     logging_settings.log_file = log_file.c_str();
+#else
+    logging_settings.log_file_path = log_file.c_str();
+#endif
     logging_settings.lock_log = logging::DONT_LOCK_LOG_FILE;
     logging::InitLogging(logging_settings);
   }