IndexedDB: Added IDBObjectStore.getAll() implementation.

content/common/indexed_db/indexed_db_key_range.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/common/indexed_db/indexed_db_key_range.h"
 
 #include "base/logging.h"
 #include "third_party/WebKit/public/platform/WebIDBTypes.h"
 
 namespace content {
@@ skipping 17 matching lines @@
     : lower_(key), upper_(key), lower_open_(false), upper_open_(false) {}
 
 IndexedDBKeyRange::IndexedDBKeyRange(const IndexedDBKeyRange& other) = default;
 IndexedDBKeyRange::~IndexedDBKeyRange() = default;
 IndexedDBKeyRange& IndexedDBKeyRange::operator=(
     const IndexedDBKeyRange& other) = default;
 
 bool IndexedDBKeyRange::IsOnlyKey() const {
   if (lower_open_ || upper_open_)
     return false;
+  if (IsEmpty())
+    return false;
 
   return lower_.Equals(upper_);
 }
 
+bool IndexedDBKeyRange::IsEmpty() const {
+  return !lower_.IsValid() && !upper_.IsValid();
+}
+
 }  // namespace content