tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index bf39a819c52d78955b3ef95b054df8c26d01a216..829e7b74cc344d01f74ad3d5acfb7d581200c71d 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -65779,6 +65779,67 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="WebFont.DownloadTime.MissedCache.0.Under10KB" units="ms">

[Kunihiko Sakamoto, 2016/09/01 01:33:02]

You might want to use a <histogram_suffixes>.

[Takashi Toyoshima, 2016/09/01 06:16:03]

OK. So to make the suffix rule simple, let me rename them to
WebFont.MissedCache.*.

+  <owner>kenjibaheux@chromium.org</owner>
+  <owner>ksakamoto@chromium.org</owner>
+  <owner>toyoshim@chromium.org</owner>
+  <summary>
+    The time it takes for a webfont download to finish, for webfonts of under
+    10KB. This variant is counted only for requests make a network request.
+  </summary>
+</histogram>
+
+<histogram name="WebFont.DownloadTime.MissedCache.1.10KBTo50KB" units="ms">
+  <owner>kenjibaheux@chromium.org</owner>
+  <owner>ksakamoto@chromium.org</owner>
+  <owner>toyoshim@chromium.org</owner>
+  <summary>
+    The time it takes for a webfont download to finish, for webfonts of
+    10KB-50KB. This variant is counted only for requests make a network request.
+  </summary>
+</histogram>
+
+<histogram name="WebFont.DownloadTime.MissedCache.2.50KBTo100KB" units="ms">
+  <owner>kenjibaheux@chromium.org</owner>
+  <owner>ksakamoto@chromium.org</owner>
+  <owner>toyoshim@chromium.org</owner>
+  <summary>
+    The time it takes for a webfont download to finish, for webfonts of
+    50KB-100KB. This variant is counted only for requests make a network
+    request.
+  </summary>
+</histogram>
+
+<histogram name="WebFont.DownloadTime.MissedCache.3.100KBTo1MB" units="ms">
+  <owner>kenjibaheux@chromium.org</owner>
+  <owner>ksakamoto@chromium.org</owner>
+  <owner>toyoshim@chromium.org</owner>
+  <summary>
+    The time it takes for a webfont download to finish, for webfonts of
+    100KB-1MB. This variant is counted only for requests make a network request.
+  </summary>
+</histogram>
+
+<histogram name="WebFont.DownloadTime.MissedCache.4.Over1MB" units="ms">
+  <owner>kenjibaheux@chromium.org</owner>
+  <owner>ksakamoto@chromium.org</owner>
+  <owner>toyoshim@chromium.org</owner>
+  <summary>
+    The time it takes for a webfont download to finish, for webfonts of over
+    1MB. This variant is counted only for requests make a network request.
+  </summary>
+</histogram>
+
+<histogram name="WebFont.DownloadTime.MissedCache.LoadError" units="ms">
+  <owner>kenjibaheux@chromium.org</owner>
+  <owner>ksakamoto@chromium.org</owner>
+  <owner>toyoshim@chromium.org</owner>
+  <summary>
+    The time taken for a webfont download that failed. Includes aborted
+    requests. This variant is counted only for requests make a network request.
+  </summary>
+</histogram>
+
 <histogram name="WebFont.FontDisplayValue" enum="FontDisplayValue">
   <owner>kenjibaheux@chromium.org</owner>
   <owner>ksakamoto@chromium.org</owner>