Log JumpListUpdater functions' execution time to UMA

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 4ac7a30ba76d3dcc1dbf4912ac0e5d55e75197d7..9b2d51c31cb8df9b3a1ba3b6ded73c14d9fa4736 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -81767,6 +81767,26 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="WinJumplistUpdater.AddCustomCategoryDuration" units="ms">
+  <owner>chengx@chromium.org</owner>
+  <summary>Time spent in JumpListUpdater::AddCustomCategory.</summary>
+</histogram>
+
+<histogram name="WinJumplistUpdater.AddTasksDuration" units="ms">
+  <owner>chengx@chromium.org</owner>
+  <summary>Time spent in JumpListUpdater::AddTasks.</summary>
+</histogram>
+
+<histogram name="WinJumplistUpdater.BeginUpdateDuration" units="ms">
+  <owner>chengx@chromium.org</owner>
+  <summary>Time spent in JumpListUpdater::BeginUpdate.</summary>
+</histogram>
+
+<histogram name="WinJumplistUpdater.CommitUpdateDuration" units="ms">
+  <owner>chengx@chromium.org</owner>
+  <summary>Time spent in JumpListUpdater::CommitUpdate.</summary>
+</histogram>
+
 <histogram name="WinTimeTicks.FailedToChangeCores" enum="WindowsVersion">
   <obsolete>
     Removed 01/2017.