[Translate] Integrate TranslateEventProto UMA logging into TranslateManager.

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 988fba13c4210a41bb63b9a41d0be3e8cc9ba8b7..7980816307fa6c307ed3be7c35b0348f11f8bd0a 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -102894,6 +102894,11 @@ value.
   <int value="18" label="Page Action icon activated"/>
   <int value="19" label="Page Action icon deactivated"/>
   <int value="20" label="Bubble was shown"/>
+  <int value="21" label="Bubble not shown: window is no longer valid"/>
+  <int value="22" label="Bubble not shown: window is minimized"/>
+  <int value="23" label="Bubble not shown: window is not active"/>
+  <int value="24" label="Bubble not shown: web contents not active"/>
+  <int value="25" label="Bubble not shown: editable field is active"/>
 </enum>
 
 <enum name="TranslateError" type="int">