[Password Generation] Trigger confirmation bubble when a password is saved

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 1e0fb7df9adf37ffc9740dda9d40ab2806369761..39c9255fa026d3461a2e1589d53a34317af9a503 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -43560,6 +43560,8 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <int value="1" label="Opened manually / Offering a password to save"/>
   <int value="2" label="Opened manually / Managing saved passwords"/>
   <int value="3" label="Opened manually / Site is blacklisted"/>
+  <int value="4"
+      label="Opened automatically / Confirming generated password saved"/>
 </enum>
 
 <enum name="PasswordGenerationEvent" type="int">
@@ -44025,6 +44027,7 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <int value="4" label="Clicked 'Manage passwords'"/>
   <int value="5" label="Clicked 'Done'"/>
   <int value="6" label="Clicked 'Enable password manager'"/>
+  <int value="7" label="Clicked 'OK'"/>
 </enum>
 
 <enum name="PeerConnectionCounters" type="int">