Port IndexedDB open() and database callbacks to Mojo.

content/child/indexed_db/webidbdatabase_impl.h

Index: content/child/indexed_db/webidbdatabase_impl.h
diff --git a/content/child/indexed_db/webidbdatabase_impl.h b/content/child/indexed_db/webidbdatabase_impl.h
index 85710030a8b3778bfbbafed2e865ee2a97b61ab6..6eb845a66b605904c016821054f9bc9fb09352a0 100644
--- a/content/child/indexed_db/webidbdatabase_impl.h
+++ b/content/child/indexed_db/webidbdatabase_impl.h
@@ -17,7 +17,6 @@
 namespace blink {
 class WebBlobInfo;
 class WebIDBCallbacks;
-class WebIDBDatabaseCallbacks;
 class WebIDBObserver;
 class WebString;
 }
@@ -28,7 +27,6 @@ class ThreadSafeSender;
 class WebIDBDatabaseImpl : public blink::WebIDBDatabase {
  public:
   WebIDBDatabaseImpl(int32_t ipc_database_id,
-                     int32_t ipc_database_callbacks_id,
                      ThreadSafeSender* thread_safe_sender);
   ~WebIDBDatabaseImpl() override;
 
@@ -41,7 +39,6 @@ class WebIDBDatabaseImpl : public blink::WebIDBDatabase {
   void deleteObjectStore(long long transaction_id,
                          long long object_store_id) override;
   void createTransaction(long long transaction_id,
-                         blink::WebIDBDatabaseCallbacks* callbacks,
                          const blink::WebVector<long long>& scope,
                          blink::WebIDBTransactionMode mode) override;
 
@@ -120,7 +117,6 @@ class WebIDBDatabaseImpl : public blink::WebIDBDatabase {
 
  private:
   int32_t ipc_database_id_;
-  int32_t ipc_database_callbacks_id_;
   std::set<int32_t> observer_ids_;
   scoped_refptr<ThreadSafeSender> thread_safe_sender_;
 };