Port IndexedDB open() and database callbacks to Mojo.

content/browser/indexed_db/indexed_db_database_callbacks.cc

 // Copyright (c) 2012 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_database_callbacks.h"
 
-#include "content/browser/indexed_db/indexed_db_database_error.h"
 #include "content/browser/indexed_db/indexed_db_dispatcher_host.h"
 #include "content/browser/indexed_db/indexed_db_observer_changes.h"
+#include "content/common/indexed_db/indexed_db_database_error.h"
 #include "content/common/indexed_db/indexed_db_messages.h"
 
+using ::indexed_db::mojom::DatabaseClientAssociatedPtr;
+
 namespace content {
 
+class IndexedDBDatabaseCallbacks::IOThreadHelper {
+ public:
+  IOThreadHelper(DatabaseClientAssociatedPtr client);
+  ~IOThreadHelper();
+
+  void OnForcedClosed();
+  void OnVersionChange(int64_t old_version, int64_t new_version);
+  void OnAbort(int64_t transaction_id, const IndexedDBDatabaseError& error);
+  void OnComplete(int64_t transaction_id);
+
+ private:
+  DatabaseClientAssociatedPtr client_;
+};
+
 IndexedDBDatabaseCallbacks::IndexedDBDatabaseCallbacks(
     IndexedDBDispatcherHost* dispatcher_host,
     int ipc_thread_id,
-    int ipc_database_callbacks_id)
+    DatabaseClientAssociatedPtr client)
     : dispatcher_host_(dispatcher_host),
       ipc_thread_id_(ipc_thread_id),
-      ipc_database_callbacks_id_(ipc_database_callbacks_id) {}
+      io_thread_helper_(nullptr) {
+  if (client)
+    io_thread_helper_ = new IOThreadHelper(std::move(client));
+}
 
-IndexedDBDatabaseCallbacks::~IndexedDBDatabaseCallbacks() {}
+IndexedDBDatabaseCallbacks::~IndexedDBDatabaseCallbacks() {
+  if (io_thread_helper_)
+    BrowserThread::DeleteSoon(BrowserThread::IO, FROM_HERE, io_thread_helper_);
+}
 
 void IndexedDBDatabaseCallbacks::OnForcedClose() {
-  if (!dispatcher_host_.get())
-    return;
-
-  dispatcher_host_->Send(new IndexedDBMsg_DatabaseCallbacksForcedClose(
-      ipc_thread_id_, ipc_database_callbacks_id_));
-
-  dispatcher_host_ = NULL;
+  dispatcher_host_ = nullptr;
+  BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
+                          base::Bind(&IOThreadHelper::OnForcedClosed,
+                                     base::Unretained(io_thread_helper_)));
 }
 
 void IndexedDBDatabaseCallbacks::OnVersionChange(int64_t old_version,
                                                  int64_t new_version) {
-  if (!dispatcher_host_.get())
-    return;
-
-  dispatcher_host_->Send(new IndexedDBMsg_DatabaseCallbacksVersionChange(
-      ipc_thread_id_, ipc_database_callbacks_id_, old_version, new_version));
+  BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
+                          base::Bind(&IOThreadHelper::OnVersionChange,
+                                     base::Unretained(io_thread_helper_),
+                                     old_version, new_version));
 }
 
 void IndexedDBDatabaseCallbacks::OnAbort(int64_t host_transaction_id,
                                          const IndexedDBDatabaseError& error) {
   if (!dispatcher_host_.get())
     return;
 
   dispatcher_host_->FinishTransaction(host_transaction_id, false);
-  dispatcher_host_->Send(new IndexedDBMsg_DatabaseCallbacksAbort(
-      ipc_thread_id_,
-      ipc_database_callbacks_id_,
-      dispatcher_host_->RendererTransactionId(host_transaction_id),
-      error.code(),
-      error.message()));
+  BrowserThread::PostTask(
+      BrowserThread::IO, FROM_HERE,
+      base::Bind(&IOThreadHelper::OnAbort, base::Unretained(io_thread_helper_),
+                 dispatcher_host_->RendererTransactionId(host_transaction_id),
+                 error));
 }
 
 void IndexedDBDatabaseCallbacks::OnComplete(int64_t host_transaction_id) {
   if (!dispatcher_host_.get())
     return;
 
   dispatcher_host_->FinishTransaction(host_transaction_id, true);
-  dispatcher_host_->Send(new IndexedDBMsg_DatabaseCallbacksComplete(
-      ipc_thread_id_,
-      ipc_database_callbacks_id_,
-      dispatcher_host_->RendererTransactionId(host_transaction_id)));
+  BrowserThread::PostTask(
+      BrowserThread::IO, FROM_HERE,
+      base::Bind(&IOThreadHelper::OnComplete,
+                 base::Unretained(io_thread_helper_),
+                 dispatcher_host_->RendererTransactionId(host_transaction_id)));
 }
 
 void IndexedDBDatabaseCallbacks::OnDatabaseChange(
     int32_t ipc_database_id,
     std::unique_ptr<IndexedDBObserverChanges> changes) {
   dispatcher_host_->Send(new IndexedDBMsg_DatabaseCallbacksChanges(
       ipc_thread_id_, ipc_database_id,
       IndexedDBDispatcherHost::ConvertObserverChanges(std::move(changes))));
 }
 
+IndexedDBDatabaseCallbacks::IOThreadHelper::IOThreadHelper(
+    DatabaseClientAssociatedPtr client)
+    : client_(std::move(client)) {}
+
+IndexedDBDatabaseCallbacks::IOThreadHelper::~IOThreadHelper() = default;
+
+void IndexedDBDatabaseCallbacks::IOThreadHelper::OnForcedClosed() {
+  client_->OnForcedClosed();
+}
+
+void IndexedDBDatabaseCallbacks::IOThreadHelper::OnVersionChange(
+    int64_t old_version,
+    int64_t new_version) {
+  client_->OnVersionChange(old_version, new_version);
+}
+
+void IndexedDBDatabaseCallbacks::IOThreadHelper::OnAbort(
+    int64_t transaction_id,
+    const IndexedDBDatabaseError& error) {
+  client_->OnTransactionAborted(transaction_id, error);
+}
+
+void IndexedDBDatabaseCallbacks::IOThreadHelper::OnComplete(
+    int64_t transaction_id) {
+  client_->OnTransactionCompleted(transaction_id);
+}
+
 }  // namespace content