[IndexedDB] Closing mojo connections when renderer quits

content/browser/indexed_db/indexed_db_transaction_coordinator.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/indexed_db/indexed_db_transaction_coordinator.h"
 
 #include "base/logging.h"
 #include "content/browser/indexed_db/indexed_db_tracing.h"
 #include "content/browser/indexed_db/indexed_db_transaction.h"
 #include "third_party/WebKit/public/platform/modules/indexeddb/WebIDBTypes.h"
@@ skipping 83 matching lines @@
   return result;
 }
 
 void IndexedDBTransactionCoordinator::RecordMetrics() const {
   IDB_TRACE_COUNTER2("IndexedDBTransactionCoordinator", "StartedTransactions",
                      started_transactions_.size(), "QueuedTransactions",
                      queued_transactions_.size());
 }
 
 void IndexedDBTransactionCoordinator::ProcessQueuedTransactions() {
-  if (queued_transactions_.empty())
+  if (queued_transactions_.empty()) {
+    RecordMetrics();

[pwnall, 2017/03/03 01:41:12]

Is this a leftover from a different CL?

[dmurph, 2017/03/04 00:39:41]

removed - I had the trace url dependency in here.

     return;
+  }
 
   DCHECK(!IsRunningVersionChangeTransaction());
 
   // The locked_scope set accumulates the ids of object stores in the scope of
   // running read/write transactions. Other read-write transactions with
   // stores in this set may not be started. Read-only transactions may start,
   // taking a snapshot of the database, which does not include uncommitted
   // data. ("Version change" transactions are exclusive, but handled by the
   // connection sequencing in IndexedDBDatabase.)
   std::set<int64_t> locked_scope;
@@ skipping 60 matching lines @@
 
     case blink::WebIDBTransactionModeReadOnly:
     case blink::WebIDBTransactionModeReadWrite:
       return !DoSetsIntersect(transaction->scope(), locked_scope);
   }
   NOTREACHED();
   return false;
 }
 
 }  // namespace content