Disable noisy printf in drive_integration_service.cc

chrome/browser/chromeos/drive/drive_integration_service.cc

Index: chrome/browser/chromeos/drive/drive_integration_service.cc
diff --git a/chrome/browser/chromeos/drive/drive_integration_service.cc b/chrome/browser/chromeos/drive/drive_integration_service.cc
index dc92f9b141a5e8eb4dbbd3f6fcab65753b29bd64..6dd0971e0878d12f383da017291c9c727a9bb862 100644
--- a/chrome/browser/chromeos/drive/drive_integration_service.cc
+++ b/chrome/browser/chromeos/drive/drive_integration_service.cc
@@ -151,8 +151,9 @@ FileError InitializeMetadata(
     metadata_storage->RecoverCacheInfoFromTrashedResourceMap(
         &recovered_cache_info);
 
-    LOG(WARNING) << "DB could not be opened for some reasons. "
-                 << "Recovering cache files to " << dest_directory.value();
+    LOG_IF(WARNING, !recovered_cache_info.empty())
+        << "DB could not be opened for some reasons. "
+        << "Recovering cache files to " << dest_directory.value();
     if (!cache->RecoverFilesFromCacheDirectory(dest_directory,
                                                recovered_cache_info)) {
       LOG(WARNING) << "Failed to recover cache files.";