Index: tools/metrics/histograms/histograms.xml |
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml |
index a5abde995d8ff8928986cf3c7c928031598116b6..a044f20556b4f94ee35c4535ccf96f5174affb68 100644 |
--- a/tools/metrics/histograms/histograms.xml |
+++ b/tools/metrics/histograms/histograms.xml |
@@ -23956,6 +23956,18 @@ Therefore, the affected-histogram name has to have at least one dot in it. |
</summary> |
</histogram> |
+<histogram name="Prerender.LocalPredictorPrefetchMatchPLT" units="milliseconds"> |
+ <owner>tburkard@chromium.org</owner> |
+ <summary> |
+ The PrerenderLocalPredictor uses local browsing history and the prerender |
+ service to predict pages likely visited soon. Some of these URLs are |
+ prefetched. When such prefetched likely next pages are visited, this |
+ histogram records the PLT for such pages. In particular, this also happens |
+ if prefetch is actually disabled, allowing (by pivoting on whether or not |
+ prefetch is enabled) to compare the effect of prefetch on PLT. |
+ </summary> |
+</histogram> |
+ |
<histogram name="Prerender.LocalPredictorServiceLookupTime" |
units="milliseconds"> |
<owner>tburkard@chromium.org</owner> |