[sql] Database recovery system for Shortcuts.

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 4efad5d71eff4c442afd7346449956087716a504..57a1b7673077bbebfe3c8e7242162f0acfe95c6a 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -54083,6 +54083,9 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
     Records specific failure and success cases in sql::Recovery implementation,
     to determine which cases (if any) might be worth writing additional
     automated recovery code for, versus which should lead to clearing databases.
+    RECOVERY_FAILED_AUTORECOVERDB_SCHEMACREATE and
+    RECOVERY_FAILED_AUTORECOVERDB_SCHEMASELECT are subsets of
+    RECOVERY_FAILED_AUTORECOVERDB_SCHEMA.
   </summary>
 </histogram>
 
@@ -89761,6 +89764,33 @@ To add a new entry, add it with any value and run test to compute valid value.
   <int value="19" label="RECOVERY_FAILED_META_NO_VERSION">
     GetMetaVersionNumber() found no version row in meta table.
   </int>
+  <int value="20" label="RECOVERY_SUCCESS_AUTORECOVERDB">
+    sql::Recovery::RecoverDatabaseOrRaze() completed successfully.
+  </int>
+  <int value="21" label="RECOVERY_FAILED_AUTORECOVERDB_BEGIN">
+    Autorecover could not setup the database for recovery.
+  </int>
+  <int value="22" label="RECOVERY_FAILED_AUTORECOVERDB_SCHEMA">
+    Autorecover could not copy existing schema.
+  </int>
+  <int value="23" label="RECOVERY_FAILED_AUTORECOVERDB_SCHEMACREATE">
+    Autorecover could not create new db schema, subset of _SCHEMA.
+  </int>
+  <int value="24" label="RECOVERY_FAILED_AUTORECOVERDB_SCHEMASELECT">
+    Autorecover could not read corrupt db schema, subset of _SCHEMA.
+  </int>
+  <int value="25" label="RECOVERY_FAILED_AUTORECOVERDB_NAMESELECT">
+    Autorecover could not read table names to copy.
+  </int>
+  <int value="26" label="RECOVERY_FAILED_AUTORECOVERDB_TABLE">
+    Autorecover failed recovering a table.
+  </int>
+  <int value="27" label="RECOVERY_FAILED_AUTORECOVERDB_SEQUENCE">
+    Autorecover failed recovering sequence table.
+  </int>
+  <int value="28" label="RECOVERY_FAILED_AUTORECOVERDB_AUX">
+    Autorecover failed recovering triggers, views, or virtual tables.
+  </int>
 </enum>
 
 <enum name="SqliteStatsEnum" type="int">