Reports Prerender and Profile Total Bytes

chrome/browser/prerender/prerender_histograms.cc

Index: chrome/browser/prerender/prerender_histograms.cc
diff --git a/chrome/browser/prerender/prerender_histograms.cc b/chrome/browser/prerender/prerender_histograms.cc
index 236c17d4e85e3420b85a2e29dc52d916fef6a88c..762bfdfe9a95b99fc25fd20b32dc8899539b0c7e 100644
--- a/chrome/browser/prerender/prerender_histograms.cc
+++ b/chrome/browser/prerender/prerender_histograms.cc
@@ -409,6 +409,33 @@ void PrerenderHistograms::RecordPrerenderPageVisitedStatus(
       UMA_HISTOGRAM_BOOLEAN(name, visited_before));
 }
 
+void PrerenderHistograms::RecordNetworkBytes(bool used,
+                                             int64 prerender_bytes,
+                                             int64 profile_bytes) {
+  const int kHistogramMin = 1;
+  const int kHistogramMax = 100000000;  // 100M.
+  const int kBucketCount = 50;
+
+  if (used) {
+    UMA_HISTOGRAM_CUSTOM_COUNTS("Prerender.NetworkBytes.Used",
+                                prerender_bytes,
+                                kHistogramMin,
+                                kHistogramMax,
+                                kBucketCount);
+  } else {
+    UMA_HISTOGRAM_CUSTOM_COUNTS("Prerender.NetworkBytes.Wasted",
+                                prerender_bytes,
+                                kHistogramMin,
+                                kHistogramMax,
+                                kBucketCount);
+  }
+  UMA_HISTOGRAM_CUSTOM_COUNTS("Prerender.NetworkBytes.TotalForProfile",
+                              profile_bytes,
+                              kHistogramMin,
+                              1000000000,  // 1G
+                              kBucketCount);
+}
+
 uint8 PrerenderHistograms::GetCurrentExperimentId() const {
   if (!WithinWindow())
     return kNoExperiment;