Quick fix for logging.

chrome/browser/translate/chrome_translate_client.cc

Index: chrome/browser/translate/chrome_translate_client.cc
diff --git a/chrome/browser/translate/chrome_translate_client.cc b/chrome/browser/translate/chrome_translate_client.cc
index c29d82fc79b9440dc06d7cac05cc956683739d89..8b60d4099d9fc3661fc0c795aaccada195889501 100644
--- a/chrome/browser/translate/chrome_translate_client.cc
+++ b/chrome/browser/translate/chrome_translate_client.cc
@@ -86,9 +86,12 @@ void LogLanguageDetectionEvent(
   // If entry is null, we don't record the page.
   // The navigation entry can be null in situations like download or initial
   // blank page.
-  if (entry != nullptr) {
+  DCHECK(web_contents) << "null contents";

[groby-ooo-7-16, 2017/06/07 16:37:50]

Probably doesn't need the "null contents" text - DCHECK(web_contents) is pretty
idiomatic check for null contents.

[renjieliu1, 2017/06/08 04:33:51]

Done.

+  if (entry != nullptr &&
+      TranslateService::IsTranslatableURL(entry->GetVirtualURL())) {
     user_event_service->RecordUserEvent(
-        translate::ConstructLanguageDetectionEvent(details));
+        translate::ConstructLanguageDetectionEvent(
+            entry->GetTimestamp().ToInternalValue(), details));
   }
 }