Initial checkin of OfflineContentProvider.

components/offline_items_collection/core/test_support/scoped_mock_offline_content_provider.cc

Index: components/offline_items_collection/core/test_support/scoped_mock_offline_content_provider.cc
diff --git a/components/offline_items_collection/core/test_support/scoped_mock_offline_content_provider.cc b/components/offline_items_collection/core/test_support/scoped_mock_offline_content_provider.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6b3d93c9034a9df3d1fabb4085a97ce5e2e02c8c
--- /dev/null
+++ b/components/offline_items_collection/core/test_support/scoped_mock_offline_content_provider.cc
@@ -0,0 +1,41 @@
+// Copyright 2017 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 "components/offline_items_collection/core/test_support/scoped_mock_offline_content_provider.h"
+
+#include "components/offline_items_collection/core/offline_content_aggregator.h"
+#include "components/offline_items_collection/core/offline_content_provider.h"
+
+namespace offline_items_collection {
+
+ScopedMockOfflineContentProvider::ScopedMockObserver::ScopedMockObserver(
+    OfflineContentProvider* provider)
+    : provider_(provider) {
+  provider_->AddObserver(this);
+}
+
+ScopedMockOfflineContentProvider::ScopedMockObserver::~ScopedMockObserver() {
+  provider_->RemoveObserver(this);
+}
+
+ScopedMockOfflineContentProvider::ScopedMockOfflineContentProvider(
+    const std::string& name_space,
+    OfflineContentAggregator* aggregator)
+    : name_space_(name_space), aggregator_(aggregator) {
+  aggregator_->RegisterProvider(name_space_, this);
+}
+
+ScopedMockOfflineContentProvider::~ScopedMockOfflineContentProvider() {
+  Unregister();
+}
+
+void ScopedMockOfflineContentProvider::Unregister() {
+  if (!aggregator_)
+    return;
+
+  aggregator_->UnregisterProvider(name_space_);
+  aggregator_ = nullptr;
+}
+
+}  // namespace offline_items_collection