Content API changes to integrate base/graph.

content/public/browser/graph/browser_context_dependency_visitor.h

+// 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_PUBLIC_BROWSER_GRAPH_BROWSER_CONTEXT_DEPENDENCY_VISITOR_H_
+#define CONTENT_PUBLIC_BROWSER_GRAPH_BROWSER_CONTEXT_DEPENDENCY_VISITOR_H_
+
+namespace graph {
+class DependencyManagerInstance;
+}  // namespace graph
+
+namespace content {
+
+class BrowserContextDependencyVisitor {
+ public:
+  virtual ~BrowserContextDependencyVisitor() {}
+
+  virtual void Visit(graph::DependencyManagerInstance* dependency_manager) = 0;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_BROWSER_GRAPH_BROWSER_CONTEXT_DEPENDENCY_VISITOR_H_