[Win] Add a fast profile switcher to the Windows taskbar item.

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 7c17d1a8153348c5fbbc40deffcbb6fd43f9f33c..603ecb246e28444af749cdd0681afc381be41fa5 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -39901,6 +39901,11 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <summary>Count of browser launches from a Windows tablet pc.</summary>
 </histogram>
 
+<histogram name="WinJumplist.Action" enum="WinJumplistCategory">
+  <owner>noms@chromium.org</owner>
+  <summary>The type of category clicked in the Windows Jumplist</summary>
+</histogram>
+
 <histogram name="WinTimeTicks.FailedToChangeCores" enum="WindowsVersion">
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <summary>
@@ -55345,6 +55350,12 @@ To add a new entry, add it with any value and run test to compute valid value.
   <int value="3" label="Packaged App"/>
 </enum>
 
+<enum name="WinJumplistCategory" type="int">
+  <int value="0" label="Recently Closed URL"/>
+  <int value="1" label="Most Visited URL"/>
+  <int value="2" label="Switch to Profile"/>
+</enum>
+
 <enum name="XMLHttpRequestSendArrayBufferOrView" type="int">
   <int value="0" label="XMLHttpRequestSendArrayBuffer"/>
   <int value="1" label="XMLHttpRequestSendArrayBufferView"/>