Create a content::ResourceContext.

content/browser/mock_resource_context.h

Index: content/browser/mock_resource_context.h
diff --git a/content/browser/mock_resource_context.h b/content/browser/mock_resource_context.h
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+// Copyright (c) 2011 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_MOCK_RESOURCE_CONTEXT_H_
+#define CONTENT_BROWSER_MOCK_RESOURCE_CONTEXT_H_
+
+#include "content/browser/resource_context.h"
+
+namespace base {
+template <typename T>
+struct DefaultLazyInstanceTraits;
+}  // namespace base
+
+namespace content {
+
+class MockResourceContext : public ResourceContext {
+ public:
+  static const ResourceContext& GetInstance();
+
+ private:
+  friend struct base::DefaultLazyInstanceTraits<MockResourceContext>;
+
+  MockResourceContext();
+  ~MockResourceContext();
+  virtual void EnsureInitialized() const;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_MOCK_RESOURCE_CONTEXT_H_