Port messages sent by WebIDBCursorImpl to Mojo.

content/browser/indexed_db/mock_indexed_db_callbacks.cc

Index: content/browser/indexed_db/mock_indexed_db_callbacks.cc
diff --git a/content/browser/indexed_db/mock_indexed_db_callbacks.cc b/content/browser/indexed_db/mock_indexed_db_callbacks.cc
index 1bb39c6bb02ba17975fd31f0e79076ff918b6917..c1eb30e84710549cec0b668478e9ca86763a5e25 100644
--- a/content/browser/indexed_db/mock_indexed_db_callbacks.cc
+++ b/content/browser/indexed_db/mock_indexed_db_callbacks.cc
@@ -11,9 +11,11 @@
 namespace content {
 
 MockIndexedDBCallbacks::MockIndexedDBCallbacks()
-    : IndexedDBCallbacks(NULL, 0, 0), expect_connection_(true) {}
+    : IndexedDBCallbacks(nullptr, url::Origin(), nullptr),
+      expect_connection_(true) {}
 MockIndexedDBCallbacks::MockIndexedDBCallbacks(bool expect_connection)
-    : IndexedDBCallbacks(NULL, 0, 0), expect_connection_(expect_connection) {}
+    : IndexedDBCallbacks(nullptr, url::Origin(), nullptr),
+      expect_connection_(expect_connection) {}
 
 MockIndexedDBCallbacks::~MockIndexedDBCallbacks() {
   EXPECT_EQ(expect_connection_, !!connection_);