Tell IDB frontend about data loss

content/browser/indexed_db/indexed_db_backing_store.cc

 // 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.
 
 #include "content/browser/indexed_db/indexed_db_backing_store.h"
 
 #include <string>
 
 #include "base/file_util.h"
 #include "base/logging.h"
@@ skipping 403 matching lines @@
   INDEXED_DB_LEVEL_DB_BACKING_STORE_OPEN_MEMORY_FAILED,
   INDEXED_DB_LEVEL_DB_BACKING_STORE_OPEN_ATTEMPT_NON_ASCII,
   INDEXED_DB_LEVEL_DB_BACKING_STORE_OPEN_DISK_FULL,
   INDEXED_DB_LEVEL_DB_BACKING_STORE_OPEN_ORIGIN_TOO_LONG,
   INDEXED_DB_LEVEL_DB_BACKING_STORE_OPEN_MAX,
 };
 
 scoped_refptr<IndexedDBBackingStore> IndexedDBBackingStore::Open(
     const string16& database_identifier,
     const base::FilePath& path_base,
-    const string16& file_identifier) {
+    const string16& file_identifier,
+    WebKit::WebIDBCallbacks::DataLoss* data_loss) {
+  *data_loss = WebKit::WebIDBCallbacks::DataLossNone;
   DefaultLevelDBFactory leveldb_factory;
-  return IndexedDBBackingStore::Open(
-      database_identifier, path_base, file_identifier, &leveldb_factory);
+  return IndexedDBBackingStore::Open(database_identifier,
+                                     path_base,
+                                     file_identifier,
+                                     data_loss,
+                                     &leveldb_factory);
 }
 
 scoped_refptr<IndexedDBBackingStore> IndexedDBBackingStore::Open(
     const string16& database_identifier,
     const base::FilePath& path_base,
     const string16& file_identifier,
+    WebKit::WebIDBCallbacks::DataLoss* data_loss,
     LevelDBFactory* leveldb_factory) {
   IDB_TRACE("IndexedDBBackingStore::Open");
   DCHECK(!path_base.empty());
+  *data_loss = WebKit::WebIDBCallbacks::DataLossNone;
 
   scoped_ptr<LevelDBComparator> comparator(new Comparator());
   scoped_ptr<LevelDBDatabase> db;
 
   if (!IsStringASCII(path_base.AsUTF8Unsafe())) {
     base::Histogram::FactoryGet("WebCore.IndexedDB.BackingStore.OpenStatus",
                                 1,
                                 INDEXED_DB_LEVEL_DB_BACKING_STORE_OPEN_MAX,
                                 INDEXED_DB_LEVEL_DB_BACKING_STORE_OPEN_MAX + 1,
                                 base::HistogramBase::kUmaTargetedHistogramFlag)
@@ skipping 94 matching lines @@
     base::Histogram::FactoryGet(
         "WebCore.IndexedDB.BackingStore.OpenStatus",
         1,
         INDEXED_DB_LEVEL_DB_BACKING_STORE_OPEN_MAX,
         INDEXED_DB_LEVEL_DB_BACKING_STORE_OPEN_MAX + 1,
         base::HistogramBase::kUmaTargetedHistogramFlag)
         ->Add(INDEXED_DB_LEVEL_DB_BACKING_STORE_OPEN_DISK_FULL);
     return scoped_refptr<IndexedDBBackingStore>();
   } else {
     LOG(ERROR) << "IndexedDB backing store open failed, attempting cleanup";
+    *data_loss = WebKit::WebIDBCallbacks::DataLossTotal;
     bool success = leveldb_factory->DestroyLevelDB(file_path);
     if (!success) {
       LOG(ERROR) << "IndexedDB backing store cleanup failed";
       base::Histogram::FactoryGet(
           "WebCore.IndexedDB.BackingStore.OpenStatus",
           1,
           INDEXED_DB_LEVEL_DB_BACKING_STORE_OPEN_MAX,
           INDEXED_DB_LEVEL_DB_BACKING_STORE_OPEN_MAX + 1,
           base::HistogramBase::kUmaTargetedHistogramFlag)
           ->Add(INDEXED_DB_LEVEL_DB_BACKING_STORE_OPEN_CLEANUP_DESTROY_FAILED);
@@ skipping 2072 matching lines @@
 }
 
 void IndexedDBBackingStore::Transaction::Rollback() {
   IDB_TRACE("IndexedDBBackingStore::Transaction::Rollback");
   DCHECK(transaction_.get());
   transaction_->Rollback();
   transaction_ = NULL;
 }
 
 }  // namespace content