Send UMA recording state to TranslateRanker.

chrome/browser/translate/translate_ranker_metrics_provider.h

Index: chrome/browser/translate/translate_ranker_metrics_provider.h
diff --git a/chrome/browser/translate/translate_ranker_metrics_provider.h b/chrome/browser/translate/translate_ranker_metrics_provider.h
index 7490cab99dcf4c6d12f4b88e6c82580aaceead3a..2dcca90b4413cc0531cfe0a7aaeee3e6e0f324a8 100644
--- a/chrome/browser/translate/translate_ranker_metrics_provider.h
+++ b/chrome/browser/translate/translate_ranker_metrics_provider.h
@@ -14,12 +14,17 @@ class TranslateRankerMetricsProvider : public metrics::MetricsProvider {
  public:
   TranslateRankerMetricsProvider() {}
   ~TranslateRankerMetricsProvider() override {}
+  void OnRecordingEnabled() override;

[Roger McFarlane (Chromium), 2017/06/06 19:28:27]

Should these be down next to ProvideGeneralMetrics(...)?

[hamelphi, 2017/06/06 20:28:06]

Actually, I don't think ProvideGeneralMetrics should be private. MetricsProvider
declares it as public. so I moved it up here.

+  void OnRecordingDisabled() override;
 
  private:
   // From metrics::MetricsProvider...
   void ProvideGeneralMetrics(
       metrics::ChromeUserMetricsExtension* uma_proto) override;
 
+  // Enables or disables the logging for translate ranker.
+  void SetLoggingState(bool logging_enabled);
+
   DISALLOW_COPY_AND_ASSIGN(TranslateRankerMetricsProvider);
 };