Add more output to Backup export failure

crostini.BackupRestore tast test is failing due to failing to share the
backup file, so adding more context to log message to help debug.

Bug: 1130412
Change-Id: I6e1e2e33044532d7acd2b8695f9411b5d8f8265c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2418529
Commit-Queue: Joel Hockey <joelhockey@chromium.org>
Commit-Queue: Nicholas Verne <nverne@chromium.org>
Auto-Submit: Joel Hockey <joelhockey@chromium.org>
Reviewed-by: Nicholas Verne <nverne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#808791}

chrome/browser/chromeos/crostini/crostini_export_import.cc

@@ -296,7 +296,7 @@ void CrostiniExportImport::Start(
               kCrostiniDefaultVmName, path, false,
               base::BindOnce(&CrostiniExportImport::ExportAfterSharing,
                              weak_ptr_factory_.GetWeakPtr(),
-                             operation_data->container_id,
+                             operation_data->container_id, path,
                              std::move(callback))));
       break;
     case ExportImportType::IMPORT:
@@ -304,19 +304,22 @@ void CrostiniExportImport::Start(
           kCrostiniDefaultVmName, path, false,
           base::BindOnce(&CrostiniExportImport::ImportAfterSharing,
                          weak_ptr_factory_.GetWeakPtr(),
-                         operation_data->container_id, std::move(callback)));
+                         operation_data->container_id, path,
+                         std::move(callback)));
       break;
   }
 }
 
 void CrostiniExportImport::ExportAfterSharing(
     const ContainerId& container_id,
+    const base::FilePath& path,
     CrostiniManager::CrostiniResultCallback callback,
     const base::FilePath& container_path,
     bool result,
     const std::string& failure_reason) {
   if (!result) {
-    LOG(ERROR) << "Error sharing for export " << container_path.value() << ": "
+    LOG(ERROR) << "Error sharing for export host path=" << path.value()
+               << ", container path=" << container_path.value() << ": "
                << failure_reason;
     auto it = status_trackers_.find(container_id);
     if (it != status_trackers_.end()) {
@@ -468,12 +471,14 @@ void CrostiniExportImport::OnExportContainerProgress(
 
 void CrostiniExportImport::ImportAfterSharing(
     const ContainerId& container_id,
+    const base::FilePath& path,
     CrostiniManager::CrostiniResultCallback callback,
     const base::FilePath& container_path,
     bool result,
     const std::string& failure_reason) {
   if (!result) {
-    LOG(ERROR) << "Error sharing for import " << container_path.value() << ": "
+    LOG(ERROR) << "Error sharing for import path=" << path
+               << ", container path=" << container_path.value() << ": "
                << failure_reason;
     auto it = status_trackers_.find(container_id);
     if (it != status_trackers_.end()) {

chrome/browser/chromeos/crostini/crostini_export_import.h

@@ -202,6 +202,7 @@ class CrostiniExportImport : public KeyedService,
                                  uint64_t minimum_required_space) override;
 
   void ExportAfterSharing(const ContainerId& container_id,
+                          const base::FilePath& path,
                           CrostiniManager::CrostiniResultCallback callback,
                           const base::FilePath& container_path,
                           bool result,
@@ -214,6 +215,7 @@ class CrostiniExportImport : public KeyedService,
                         uint64_t compressed_size);
 
   void ImportAfterSharing(const ContainerId& container_id,
+                          const base::FilePath& path,
                           CrostiniManager::CrostiniResultCallback callback,
                           const base::FilePath& container_path,
                           bool result,