Merge 143363

Source/WebCore/page/FeatureObserver.cpp

Index: Source/WebCore/page/FeatureObserver.cpp
===================================================================
--- Source/WebCore/page/FeatureObserver.cpp	(revision 143882)
+++ Source/WebCore/page/FeatureObserver.cpp	(working copy)
@@ -42,6 +42,12 @@
     // We always log PageDestruction so that we have a scale for the rest of the features.
     HistogramSupport::histogramEnumeration("WebCore.FeatureObserver", PageDestruction, NumberOfFeatures);
 
+    updateMeasurements();
+}
+
+void FeatureObserver::updateMeasurements()
+{
+    HistogramSupport::histogramEnumeration("WebCore.FeatureObserver", PageVisits, NumberOfFeatures);
     if (!m_featureBits)
         return;
 
@@ -49,8 +55,15 @@
         if (m_featureBits->quickGet(i))
             HistogramSupport::histogramEnumeration("WebCore.FeatureObserver", i, NumberOfFeatures);
     }
+
+    m_featureBits->clearAll();
 }
 
+void FeatureObserver::didCommitLoad()
+{
+    updateMeasurements();
+}
+
 void FeatureObserver::observe(Document* document, Feature feature)
 {
     if (!document)