Add UMA stats for open audio input device failure.

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 94e3845d52afa8b8dc23ee7c5e6335a47f9649ae..64f0e12de51747056ff8fa7d996c4cf10cbe0994 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -10544,7 +10544,7 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="Media.AudioInputControllerCaptureStartupSuccess"
-    enum="BooleanSuccess">
+    enum="CaptureStartupResult">
   <summary>
     Whether capture started successfully after an input stream startup was
     requested.
@@ -37322,6 +37322,13 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <int value="8" label="YV12"/>
 </enum>
 
+<enum name="CaptureStartupResult" type="int">
+  <int value="0" label="No data callback"/>
+  <int value="1" label="OK"/>
+  <int value="2" label="Failed to create stream"/>
+  <int value="3" label="Failed to open stream"/>
+</enum>
+
 <enum name="CastPlayBackState" type="int">
   <int value="0" label="YT_PLAYER_SUCCESS"/>
   <int value="1" label="YT_PLAYER_FAILURE"/>