Postmortem report collection: validate internal state

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 62ad949245cdf3401f13e913905469dbff684236..3d9e8c35e8e861ceb4929811cceefbedcf45d1f6 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -371,6 +371,15 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="ActivityTracker.Collect.AnalyzerCreationError"
+    enum="ActivityTrackerAnalyzerCreationError">
+  <owner>manzagop@chromium.org</owner>
+  <summary>
+    The analyzer creation error code. Logged each time analyzer creation fails,
+    at most once per processed stability debug file.
+  </summary>
+</histogram>
+
 <histogram name="ActivityTracker.Collect.InitStatus"
     enum="ActivityTrackerCollectInitStatus">
   <owner>manzagop@chromium.org</owner>
@@ -82409,6 +82418,14 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="7" label="TrustedPinned"/>
 </enum>
 
+<enum name="ActivityTrackerAnalyzerCreationError" type="int">
+  <int value="0" label="Invalid memory mapped file"/>
+  <int value="1" label="PMA bad file"/>
+  <int value="2" label="PMA uninitialized"/>
+  <int value="3" label="PMA deleted"/>
+  <int value="4" label="PMA corrupt"/>
+</enum>
+
 <enum name="ActivityTrackerCollectInitStatus" type="int">
   <int value="0" label="Success"/>
   <int value="1" label="Unknown directory"/>