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 9497be61e3743932e72ba203ee646555f0e155d8..aca182590449219e63ac48ef72c589824fc88fa1 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -1416,6 +1416,20 @@ other types of suffix sets.
   </summary>
 </histogram>
 
+<histogram name="Chrome.Android.Activity.CrashCounts" enum="AndroidActivityId">
+  <summary>
+    Indicates how many times each particular type of Activity was in the
+    foreground when a UMA session was terminated abnormally.
+  </summary>
+</histogram>
+
+<histogram name="Chrome.Android.Activity.LaunchCounts" enum="AndroidActivityId">
+  <summary>
+    Indicates how many times each particular type of Activity was brought to the
+    foreground when a UMA session was active (i.e. launched at some point).
+  </summary>
+</histogram>
+
 <histogram name="Chrome.Browser.CrashedExecutionPhase" enum="ExecutionPhase">
   <summary>
     Indicates the execution phase the browser was in when the browser crashed.
@@ -21570,6 +21584,13 @@ other types of suffix sets.
   <int value="4" label="Snapped"/>
 </enum>
 
+<enum name="AndroidActivityId" type="int">
+  <int value="0" label="Undefined Activity"/>
+  <int value="1" label="Main Activity"/>
+  <int value="2" label="FullScreenActivity"/>
+  <int value="3" label="Maximum Activity value (invalid)"/>

[Ilya Sherman, 2013/12/20 23:28:21]

nit: Please remove this bucket, since it's not a bucket that should be possible
to emit.

[gone, 2013/12/28 01:33:14]

Done.

+</enum>
+
 <enum name="AndroidEvictionReason" type="int">
   <int value="0" label="TabUnusedTooLong"/>
   <int value="1" label="TabUnusedInSession"/>