Added chromoting test environment for the tests to share data.

remoting/test/fake_host_list_fetcher.h

Index: remoting/test/fake_host_list_fetcher.h
diff --git a/remoting/test/fake_host_list_fetcher.h b/remoting/test/fake_host_list_fetcher.h
new file mode 100644
index 0000000000000000000000000000000000000000..16ac39dcfefb10eaeaeb0643eb1a28ac4ce58a36
--- /dev/null
+++ b/remoting/test/fake_host_list_fetcher.h
@@ -0,0 +1,36 @@
+// Copyright 2015 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 REMOTING_TEST_FAKE_HOST_LIST_FETCHER_H_
+#define REMOTING_TEST_FAKE_HOST_LIST_FETCHER_H_
+
+#include "remoting/test/host_list_fetcher.h"
+
+namespace remoting {
+namespace test {
+
+// Used to fake retrieving the host list without making any actual calls to the
+// directory service for information.
+class FakeHostListFetcher : public HostListFetcher {
+ public:
+  FakeHostListFetcher();
+  ~FakeHostListFetcher() override;
+
+  // HostListFetcher interface.
+  void RetrieveHostlist(const std::string& access_token,
+                        const HostlistCallback& callback) override;
+
+  void set_retrieved_host_list(const std::vector<HostInfo>& host_list) {
+    host_list_ = host_list;
+  }

[joedow, 2015/07/15 03:04:53]

I think there is supposed to be a space between the end of this function and
'private'.  clang-format should fix that if so.

[tonychun, 2015/07/15 17:24:49]

Done.

+ private:
+  std::vector<HostInfo> host_list_;
+
+  DISALLOW_COPY_AND_ASSIGN(FakeHostListFetcher);
+};
+
+}  // namespace test
+}  // namespace remoting
+
+#endif  // REMOTING_TEST_FAKE_HOST_LIST_FETCHER_H_