weblayer: Add error message for delete profile data

Add an error if marker file creation failed.

Bug: 1065585
Change-Id: Iaa86c52b63111097b675f93bdad95ce706cde3d0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2148840Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Bo <boliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#758868}

weblayer/browser/profile_disk_operations.cc

@@ -107,6 +107,10 @@ void MarkProfileAsDeleted(const ProfileInfo& info) {
   CHECK(data_root_path.AppendRelativePath(info.data_path, &marker_path));
   base::File file(marker_path,
                   base::File::FLAG_CREATE | base::File::FLAG_WRITE);
+  if (!base::PathExists(marker_path)) {
+    LOG(WARNING) << "Failure in deleting profile data. Profile:" << info.name
+                 << " error:" << static_cast<int>(file.error_details());
+  }
 }
 
 void TryNukeProfileFromDisk(const ProfileInfo& info) {