Migrate the IndexedDB backend from Blink to Chromium

To get the IDB backend off the (deprecated) WebKit thread, remove
intermediate proxying, and let us take advantage of base utilities,
we're moving the code from Blink to Chromium.

This patch is basically a glorified copy/paste of the Blink IDB
backend code, with Chromium coding style applied, WTF dependencies
replaced with STL and base/, redundant classes removed, etc. It
introduces some new temporary proxy classes
(content/browser/webidb*_impl.*) to allow us build both the old and
new backends.

The new backend is currently disabled by default. It can be enabled
using a new (and temporary) command line switch: --new-indexeddb Once
we've done some further cleanup and are confident that the new backend
is stable, and the bots have moved from DumpRenderTree to
content_shell, we'll switch to the new backend by default. Once that
has survived through a dev channel release, we'll delete the Blink
code and eliminate unnecessary proxy classes.

BUG=234278
R=alecflett@chromium.org, dgrogan@chromium.org, piman@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=202215

Review URL: https://codereview.chromium.org/15564008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@202604 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 110 insertions, 0 deletions

diff --git a/content/browser/indexed_db/webidbdatabase_impl.h b/content/browser/indexed_db/webidbdatabase_impl.h
new file mode 100644
index 0000000..311a156
--- /dev/null
+++ b/content/browser/indexed_db/webidbdatabase_impl.h
@@ -0,0 +1,110 @@
+// 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.
+
+#ifndef CONTENT_BROWSER_INDEXED_DB_WEBIDBDATABASE_IMPL_H_
+#define CONTENT_BROWSER_INDEXED_DB_WEBIDBDATABASE_IMPL_H_
+
+#include "base/memory/ref_counted.h"
+#include "content/browser/indexed_db/indexed_db_database.h"
+#include "content/browser/indexed_db/indexed_db_database_callbacks_wrapper.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebIDBDatabase.h"
+
+namespace WebKit {
+class WebIDBDatabaseCallbacks;
+class WebIDBDatabaseError;
+class WebIDBDatabaseMetadata;
+}
+
+namespace content {
+class IndexedDBDatabase;
+class IndexedDBDatabaseCallbacksWrapper;
+
+// See comment in WebIDBFactory for a high level overview these classes.
+class WebIDBDatabaseImpl : public WebKit::WebIDBDatabase {
+ public:
+  WebIDBDatabaseImpl(
+      scoped_refptr<IndexedDBDatabase> db,
+      scoped_refptr<IndexedDBDatabaseCallbacksWrapper> callbacks);
+  virtual ~WebIDBDatabaseImpl();
+
+  virtual void createObjectStore(long long transaction_id,
+                                 long long object_store_id,
+                                 const WebKit::WebString& name,
+                                 const WebKit::WebIDBKeyPath& key_path,
+                                 bool auto_increment);
+  virtual void deleteObjectStore(long long object_store_id,
+                                 long long transaction_id);
+  virtual void createTransaction(long long id,
+                                 WebKit::WebIDBDatabaseCallbacks* callbacks,
+                                 const WebKit::WebVector<long long>& scope,
+                                 unsigned short mode);
+  virtual void forceClose();
+  virtual void close();
+  virtual void abort(long long transaction_id);
+  virtual void abort(long long transaction_id,
+                     const WebKit::WebIDBDatabaseError& error);
+  virtual void commit(long long transaction_id);
+
+  virtual void get(long long transaction_id,
+                   long long object_store_id,
+                   long long index_id,
+                   const WebKit::WebIDBKeyRange& range,
+                   bool key_only,
+                   WebKit::WebIDBCallbacks* callbacks);
+  virtual void put(long long transaction_id,
+                   long long object_store_id,
+                   const WebKit::WebData& value,
+                   const WebKit::WebIDBKey& key,
+                   PutMode mode,
+                   WebKit::WebIDBCallbacks* callbacks,
+                   const WebKit::WebVector<long long>& index_ids,
+                   const WebKit::WebVector<WebIndexKeys>& index_keys);
+  virtual void setIndexKeys(long long transaction_id,
+                            long long object_store_id,
+                            const WebKit::WebIDBKey& key,
+                            const WebKit::WebVector<long long>& index_ids,
+                            const WebKit::WebVector<WebIndexKeys>& index_keys);
+  virtual void setIndexesReady(long long transaction_id,
+                               long long object_store_id,
+                               const WebKit::WebVector<long long>& index_ids);
+  virtual void openCursor(long long transaction_id,
+                          long long object_store_id,
+                          long long index_id,
+                          const WebKit::WebIDBKeyRange& range,
+                          unsigned short direction,
+                          bool key_only,
+                          TaskType task_type,
+                          WebKit::WebIDBCallbacks* callbacks);
+  virtual void count(long long transaction_id,
+                     long long object_store_id,
+                     long long index_id,
+                     const WebKit::WebIDBKeyRange& range,
+                     WebKit::WebIDBCallbacks* callbacks);
+  virtual void deleteRange(long long transaction_id,
+                           long long object_store_id,
+                           const WebKit::WebIDBKeyRange& range,
+                           WebKit::WebIDBCallbacks* callbacks);
+  virtual void clear(long long transaction_id,
+                     long long object_store_id,
+                     WebKit::WebIDBCallbacks* callbacks);
+
+  virtual void createIndex(long long transaction_id,
+                           long long object_store_id,
+                           long long index_id,
+                           const WebKit::WebString& name,
+                           const WebKit::WebIDBKeyPath& key_path,
+                           bool unique,
+                           bool multi_entry);
+  virtual void deleteIndex(long long transaction_id,
+                           long long object_store_id,
+                           long long index_id);
+
+ private:
+  scoped_refptr<IndexedDBDatabase> database_backend_;
+  scoped_refptr<IndexedDBDatabaseCallbacksWrapper> database_callbacks_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_INDEXED_DB_WEBIDBDATABASE_IMPL_H_