Move PageCounterValues to a separate file

community/kernel/src/main/java/org/neo4j/kernel/api/query/ExecutingQuery.java

@@ -153,7 +153,7 @@ public QuerySnapshot snapshot()
         // just needs to be captured at some point...
         long activeLockCount = this.activeLockCount.getAsLong();
         long heapAllocatedBytes = heapAllocation.allocatedBytes( threadExecutingTheQuery );
-        QuerySnapshot.PageCounterValues pageCounters = new QuerySnapshot.PageCounterValues( pageCursorCounters );
+        PageCounterValues pageCounters = new PageCounterValues( pageCursorCounters );
 
         // - at this point we are done capturing the "live" state, and can start computing the snapshot -
         long planningTimeNanos = (status.isPlanning() ? currentTimeNanos : planningDoneNanos) - startTimeNanos;

community/kernel/src/main/java/org/neo4j/kernel/api/query/PageCounterValues.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2002-2017 "Neo Technology,"
+ * Network Engine for Objects in Lund AB [http://neotechnology.com]
+ *
+ * This file is part of Neo4j.
+ *
+ * Neo4j is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.neo4j.kernel.api.query;
+
+import org.neo4j.io.pagecache.tracing.cursor.PageCursorCounters;
+
+class PageCounterValues
+{
+    final long hits, faults;
+
+    PageCounterValues( PageCursorCounters page )
+    {
+        this.hits = page.hits();
+        this.faults = page.faults();
+    }
+}

community/kernel/src/main/java/org/neo4j/kernel/api/query/QuerySnapshot.java

@@ -24,7 +24,6 @@
 import java.util.Map;
 import java.util.stream.Collectors;
 
-import org.neo4j.io.pagecache.tracing.cursor.PageCursorCounters;
 import org.neo4j.kernel.impl.query.clientconnection.ClientConnectionInfo;
 
 public class QuerySnapshot
@@ -67,17 +66,6 @@ public class QuerySnapshot
         this.allocatedBytes = allocatedBytes;
     }
 
-    static class PageCounterValues
-    {
-        final long hits, faults;
-
-        PageCounterValues( PageCursorCounters page )
-        {
-            this.hits = page.hits();
-            this.faults = page.faults();
-        }
-    }
-
     public long internalQueryId()
     {
         return query.internalQueryId();