Implementation of translation event logging.

components/translate/core/browser/translate_client.h

Index: components/translate/core/browser/translate_client.h
diff --git a/components/translate/core/browser/translate_client.h b/components/translate/core/browser/translate_client.h
index 1225a27e852910e0c346317804eae46af17626bf..c5d451afa95f46d3562e447e019d0ab319c581d9 100644
--- a/components/translate/core/browser/translate_client.h
+++ b/components/translate/core/browser/translate_client.h
@@ -20,6 +20,10 @@ namespace infobars {
 class InfoBar;
 }
 
+namespace metrics {
+class TranslateEventProto;
+}  // namespace metrics
+
 namespace translate {
 
 class TranslateAcceptLanguages;
@@ -50,6 +54,10 @@ class TranslateClient {
   // Returns the resource ID of the icon to be shown for the Translate infobars.
   virtual int GetInfobarIconID() const = 0;
 
+  // Record translate event.
+  // This is for gaia-keyed logging.

[amoylan, 2017/05/30 03:10:56]

Is 'gaia' the right terminology to use in the context of a Chromium
//components?

[renjieliu1, 2017/05/30 03:33:24]

thanks for pointing out this!

+  virtual void RecordTranslateEvent(const metrics::TranslateEventProto&) = 0;

[amoylan, 2017/05/30 03:10:56]

Include name of the parameter to RecordTranslateEvent in this declaration, since
this parameter is not an unused parameter.

[renjieliu1, 2017/05/30 03:33:24]

Done.

+
 #if !defined(USE_AURA)
   // Returns a translate infobar that owns |delegate|.
   virtual std::unique_ptr<infobars::InfoBar> CreateInfoBar(