Reauthorize Keychain to Replace Developer ID Certificate

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 fee8ffc8bb175ebd7ce9905906e441235296b34c..0ee8c53da751ed795eafcb03a21fa1381729c347 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -43746,6 +43746,42 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="OSX.KeychainReauthorizeIfNeeded" units="count">
+  <owner>kerrnel@chromium.org</owner>
+  <owner>mark@chromium.org</owner>
+  <summary>
+    The event records the number of previous times that the keychain

[Mark Mentovai, 2017/03/01 22:00:31]

Probably lop off the first three words of each of these four summaries.

[Greg K, 2017/03/02 01:28:27]

Done.

+    reauthorization did not complete.
+  </summary>
+</histogram>
+
+<histogram name="OSX.KeychainReauthorizeIfNeededAtUpdate" units="count">
+  <owner>kerrnel@chromium.org</owner>
+  <owner>mark@chromium.org</owner>
+  <summary>
+    The event records the number of previous times that the keychain
+    reauthorization did not complete, when run at update time.
+  </summary>
+</histogram>
+
+<histogram name="OSX.KeychainReauthorizeIfNeededAtUpdateSuccess" units="count">
+  <owner>kerrnel@chromium.org</owner>
+  <owner>mark@chromium.org</owner>
+  <summary>
+    The event records how many times the keychain reauthorization  ran before
+    finally succeeding, when run at update time.
+  </summary>
+</histogram>
+
+<histogram name="OSX.KeychainReauthorizeIfNeededSuccess" units="count">
+  <owner>kerrnel@chromium.org</owner>
+  <owner>mark@chromium.org</owner>
+  <summary>
+    The event records how many times the keychain reauthorization  ran before
+    finally succeeding.
+  </summary>
+</histogram>
+
 <histogram name="OSX.RendererHost.SurfaceWaitTime" units="ms">
   <obsolete>
     Deprecated as of 11/2015.