[Doodle] Record UMA for DoodleConfig download outcome and time

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 d775fe370baa72d8e51fa520cd9dd419e70a9336..f366620fa88da032e87a1adf7cd1fc837c223d61 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -13057,6 +13057,20 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="Doodle.ConfigDownloadOutcome"
+    enum="DoodleConfigDownloadOutcome">
+  <owner>treib@chromium.org</owner>
+  <summary>Outcome of downloading the Doodle config.</summary>
+</histogram>
+
+<histogram name="Doodle.ConfigDownloadTime" units="ms">
+  <owner>treib@chromium.org</owner>
+  <summary>
+    The time it took to download the Doodle config. Recorded only if the
+    download succeeded and the received data was parsed without errors.
+  </summary>
+</histogram>
+
 <histogram name="Download.AcceptRangesBytes.KBytes" units="KB">
   <owner>asanka@chromium.org</owner>
   <summary>The length of downloads for serves that accept byte ranges.</summary>
@@ -87686,6 +87700,20 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="1" label="Failed over to another collector"/>
 </enum>
 
+<enum name="DoodleConfigDownloadOutcome" type="int">
+  <summary>
+    These values are defined in the DownloadOutcome enum in
+    components/doodle/doodle_service.h.
+  </summary>
+  <int value="0" label="New doodle"/>
+  <int value="1" label="Existing doodle was revalidated"/>
+  <int value="2" label="Existing doodle was updated"/>
+  <int value="3" label="No doodle today"/>
+  <int value="4" label="Received doodle was already expired"/>
+  <int value="5" label="Download failed"/>
+  <int value="6" label="Parsing failed"/>
+</enum>
+
 <enum name="DoubleGetExperimentMethods" type="int">
   <int value="0" label="POST"/>
   <int value="1" label="GET_CACHABLE"/>