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 73276959a5715b6cdce2ee2ebea0c4b1883b786d..563321a08cd5291e55629fefeb8797b31f3c568d 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -27330,6 +27330,19 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <summary>The renderer process's memory usage after a page load.</summary>
 </histogram>
 
+<histogram name="Memory.Experimental.Renderer.LoadsInMainFrameDuringUptime">
+  <owner>keishi@chromium.org</owner>
+  <summary>
+    The number of loads in a main frame during the lifetime of a render process
+    (excludes extensions).

[Mark P, 2017/02/17 19:37:11]

Please add
Emitted when the processes quits
if true.

Otherwise, please explain.

Also, if it's emitted when the process quits, how does the fast quitting path
affect things?  Is it still emitted?

[keishi, 2017/02/20 04:11:15]

Done.

+  </summary>
+</histogram>
+
+<histogram name="Memory.Experimental.Renderer.Uptime" units="ms">
+  <owner>keishi@chromium.org</owner>
+  <summary>The uptime of a render process (excludes extensions).</summary>

[Mark P, 2017/02/17 19:37:11]

1. See
https://chromium.googlesource.com/chromium/src.git/+/HEAD/tools/metrics/histo...

2. Please clarify what uptime means.  Is this measured by something like
timeticks (which pauses when the computer is asleep) or wall time (which does
not)?

[keishi, 2017/02/20 04:11:15]

Done.

+</histogram>
+
 <histogram name="Memory.Extension" units="KB">
   <owner>hajimehoshi@chromium.org</owner>
   <owner>kenjibaheux@google.com</owner>