Upstream ChromeBrowserState sub-classes.

ios/chrome/browser/browser_state/test_chrome_browser_state_isolated_context.h

+// Copyright 2014 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 IOS_CHROME_BROWSER_BROWSER_STATE_TEST_CHROME_BROWSER_STATE_ISOLATED_CONTEXT_H_
+#define IOS_CHROME_BROWSER_BROWSER_STATE_TEST_CHROME_BROWSER_STATE_ISOLATED_CONTEXT_H_
+
+#include "base/macros.h"
+#include "ios/chrome/browser/browser_state/test_chrome_browser_state.h"
+#import "ios/public/provider/chrome/browser/ui/default_ios_web_view_factory.h"
+
+// A TestChromeBrowserState with an isolated URLRequestContext.
+class TestChromeBrowserStateWithIsolatedContext
+    : public TestChromeBrowserState {
+ public:
+  TestChromeBrowserStateWithIsolatedContext();
+  ~TestChromeBrowserStateWithIsolatedContext() override;
+
+  bool MainContextCalled() const;
+  IOSWebViewFactoryExternalService SharingService();
+
+  static scoped_ptr<TestChromeBrowserStateWithIsolatedContext> Build();
+
+  // ChromeBrowserState:
+  net::URLRequestContextGetter* GetRequestContext() override;
+  net::URLRequestContextGetter* CreateIsolatedRequestContext(
+      const base::FilePath& partition_path) override;
+
+ private:
+  bool main_context_called_;
+  scoped_refptr<net::URLRequestContextGetter> request_context_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestChromeBrowserStateWithIsolatedContext);
+};
+
+#endif  // IOS_CHROME_BROWSER_BROWSER_STATE_TEST_CHROME_BROWSER_STATE_ISOLATED_CONTEXT_H_