Make IndexedDBConnection IDs independent from the IPC database ID.

content/browser/indexed_db/indexed_db_connection.cc

Index: content/browser/indexed_db/indexed_db_connection.cc
diff --git a/content/browser/indexed_db/indexed_db_connection.cc b/content/browser/indexed_db/indexed_db_connection.cc
index a749154090bf09bf36297e38a208a7da6891d0f3..0c3cb35c010e67a465f12fd891998bff8441df93 100644
--- a/content/browser/indexed_db/indexed_db_connection.cc
+++ b/content/browser/indexed_db/indexed_db_connection.cc
@@ -8,18 +8,22 @@
 
 namespace content {
 
+namespace {
+
+static int32_t next_id;
+
+}  // namespace
+
 IndexedDBConnection::IndexedDBConnection(
     scoped_refptr<IndexedDBDatabase> database,
     scoped_refptr<IndexedDBDatabaseCallbacks> callbacks)
-    : database_(database), callbacks_(callbacks), weak_factory_(this) {}
+    : id_(next_id++),
+      database_(database),
+      callbacks_(callbacks),
+      weak_factory_(this) {}
 
 IndexedDBConnection::~IndexedDBConnection() {}
 
-void IndexedDBConnection::set_id(int32_t id) {
-  DCHECK_EQ(id_, kInvalidId);
-  id_ = id;
-}
-
 void IndexedDBConnection::Close() {
   if (!callbacks_.get())
     return;