UI for the Data Saver InfoBar Promo

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 f00548c10a523a6f29fdd0534c5f2034c85d37cd..5c17e2b721ba2794311098cc559109844617efdc 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -7625,6 +7625,10 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
     can disable the proxy via a switch on the card. The state of the proxy is
     sampled when the First Run Experience is completed and only reported if the
     Data Reduction Proxy card was shown.
+
+    The user interactions with the Infobar promo. On Android, there are two
+    actions that dismiss the promo (enable, dismiss). This is sampled when the
+    promo leaves view.
   </summary>
 </histogram>
 
@@ -67759,6 +67763,8 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
       label="Arrived at settings menu by another path: entered on, exited on"/>
   <int value="9" label="Enabled directly from the First Run Experience"/>
   <int value="10" label="Disabled directly from the First Run Experience"/>
+  <int value="11" label="Enabled directly from the Infobar promo"/>
+  <int value="12" label="Disabled directly from the Infobar promo"/>
 </enum>
 
 <enum name="DataUsageReportSubmissionResult" type="int">
@@ -76557,6 +76563,7 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="60" label="CHROME_WINDOW_ERROR"/>
   <int value="61" label="CONFIRM_DANGEROUS_DOWNLOAD"/>
   <int value="62" label="WINDOWS_DESKTOP_SEARCH_INFOBAR_DELEGATE"/>
+  <int value="64" label="DATA_REDUCTION_PROMO_INFOBAR_DELEGATE_ANDROID"/>
 </enum>
 
 <enum name="InfoBarResponse" type="int">