Revert "Record time for UI task to execute under 1/60s"

chrome/browser/metrics/first_web_contents_profiler.h

Index: chrome/browser/metrics/first_web_contents_profiler.h
diff --git a/chrome/browser/metrics/first_web_contents_profiler.h b/chrome/browser/metrics/first_web_contents_profiler.h
index d0cf306d0ef420d8287f0ac0878e7c87adae8b5e..d35c98a75ab89d59505a37d738b2e526b32ddc5b 100644
--- a/chrome/browser/metrics/first_web_contents_profiler.h
+++ b/chrome/browser/metrics/first_web_contents_profiler.h
@@ -6,7 +6,6 @@
 #define CHROME_BROWSER_METRICS_FIRST_WEB_CONTENTS_PROFILER_H_
 
 #include "base/memory/scoped_ptr.h"
-#include "base/metrics/histogram.h"
 #include "content/public/browser/web_contents_observer.h"
 
 namespace content {
@@ -74,9 +73,6 @@ class FirstWebContentsProfiler : public content::WebContentsObserver {
   // metrics. Logs |finish_reason| to UMA.
   void FinishedCollectingMetrics(FinishReason finish_reason);
 
-  // Initialize histograms for unresponsiveness metrics.
-  void InitHistograms();
-
   // Whether an attempt was made to collect the "NonEmptyPaint" metric.
   bool collected_paint_metric_;
 
@@ -97,24 +93,6 @@ class FirstWebContentsProfiler : public content::WebContentsObserver {
   // |delegate_| owns |this|.
   Delegate* delegate_;
 
-  // Histogram that keeps track of response times for the watched thread.
-  base::HistogramBase* responsiveness_histogram_;
-
-  // Histogram that keeps track of response times for the watched thread.
-  base::HistogramBase* responsiveness_1sec_histogram_;
-
-  // Histogram that keeps track of response times for the watched thread.
-  base::HistogramBase* responsiveness_10sec_histogram_;
-
-  // Histogram that keeps track of response times for the watched thread.
-  base::HistogramBase* unresponsiveness_histogram_;
-
-  // Histogram that keeps track of response times for the watched thread.
-  base::HistogramBase* unresponsiveness_1sec_histogram_;
-
-  // Histogram that keeps track of response times for the watched thread.
-  base::HistogramBase* unresponsiveness_10sec_histogram_;
-
   DISALLOW_COPY_AND_ASSIGN(FirstWebContentsProfiler);
 };