Added chromoting test environment for the tests to share data.

remoting/test/chromoting_test_driver_environment.h

Index: remoting/test/chromoting_test_driver_environment.h
diff --git a/remoting/test/chromoting_test_driver_environment.h b/remoting/test/chromoting_test_driver_environment.h
new file mode 100644
index 0000000000000000000000000000000000000000..7ce9e1f0e6a2b55b05dff46c289478e28febd235
--- /dev/null
+++ b/remoting/test/chromoting_test_driver_environment.h
@@ -0,0 +1,130 @@
+// 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_CHROMOTING_TEST_DRIVER_ENVIRONMENT_H_
+#define REMOTING_TEST_CHROMOTING_TEST_DRIVER_ENVIRONMENT_H_
+
+#include <string>
+#include <vector>
+
+#include "base/callback.h"
+#include "base/files/file_path.h"
+#include "base/memory/scoped_ptr.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace base {
+class MessageLoopForIO;
+}
+
+namespace remoting {
+namespace test {
+
+class AccessTokenFetcher;
+class RefreshTokenStore;
+class HostListFetcher;
+struct HostInfo;
+
+// Globally accessible to all test fixtures and cases and has its
+// lifetime managed by the GTest framework. It is responsible for managing
+// access tokens and retrieving the host list.
+class ChromotingTestDriverEnvironment : public testing::Environment {
+ public:
+  struct EnvironmentOptions {
+    EnvironmentOptions();
+    ~EnvironmentOptions();
+
+    std::string user_name;
+    std::string host_name;
+    base::FilePath refresh_token_file_path;
+  };
+
+  explicit ChromotingTestDriverEnvironment(const EnvironmentOptions& options);
+  ~ChromotingTestDriverEnvironment() override;
+
+  // Returns false if a valid access token cannot be retrieved.
+  bool Initialize(const std::string& auth_code);
+
+  // Retrieves connection information for all known hosts and displays
+  // their availability to STDOUT.
+  void DisplayHostList();
+
+  // Used to set fake/mock objects for ChromotingTestDriverEnvironment tests.
+  // The caller retains ownership of the supplied objects, and must ensure that
+  // they remain valid until the ChromotingTestDriverEnvironment instance has
+  // been destroyed.
+  void SetAccessTokenFetcherForTest(AccessTokenFetcher* access_token_fetcher);
+  void SetRefreshTokenStoreForTest(RefreshTokenStore* refresh_token_store);
+  void SetHostListFetcherForTest(HostListFetcher* host_list_fetcher);
+
+  // Accessors for fields used by tests.
+  const std::string& access_token() const { return access_token_; }
+  const std::string& host_name() const { return host_name_; }
+  const std::string& user_name() const { return user_name_; }
+  const std::vector<HostInfo>& host_list() const { return host_list_; }
+
+ private:
+  // testing::Environment interface.
+  void TearDown() override;
+
+  // Used to retrieve an access token.  If |auth_code| is empty, then the stored
+  // refresh_token will be used instead of |auth_code|.
+  // Returns true if a new, valid access token has been retrieved.
+  bool RetrieveAccessToken(const std::string& auth_code);
+
+  // Called after the access token fetcher completes.
+  // The tokens will be empty on failure.
+  void OnAccessTokenRetrieved(base::Closure done_closure,
+                              const std::string& retrieved_access_token,
+                              const std::string& retrieved_refresh_token);
+
+  // Used to retrieve a host list from the directory service.
+  // Returns true if the request was successful and |host_list_| is valid.
+  bool RetrieveHostList();
+
+  // Called after the host info fetcher completes.
+  void OnHostListRetrieved(base::Closure done_closure,
+                           const std::vector<HostInfo>& retrieved_host_list);
+
+  // Used for authenticating with the directory service.
+  std::string access_token_;
+
+  // Used to retrieve an access token.
+  std::string refresh_token_;
+
+  // Used to find remote host in host lost.

[anandc, 2015/07/15 23:51:58]

lost=list

[tonychun, 2015/07/16 18:46:53]

Done.

+  std::string host_name_;
+
+  // Used for authentication.
+  std::string user_name_;

[anandc, 2015/07/15 23:51:58]

Change to: "The test-account for a test case". 
Yes, it is also used for authentication, but that's primarily because we want to
test with it.

[tonychun, 2015/07/16 18:46:53]

Done.

+
+  // Path to a JSON file containing refresh tokens.
+  base::FilePath refresh_token_file_path_;
+
+  // Host info in host list used to connect to remote host.

[anandc, 2015/07/15 23:51:58]

? Did you mean: "List of remote-hosts for the specified user/test-account" ?

[tonychun, 2015/07/16 18:46:53]

Done.

+  std::vector<HostInfo> host_list_;
+
+  // Access token fetcher used by TestDriverEnvironment tests.
+  remoting::test::AccessTokenFetcher* test_access_token_fetcher_;
+
+  // RefreshTokenStore used by TestDriverEnvironment tests.
+  remoting::test::RefreshTokenStore* test_refresh_token_store_;
+
+  // HostListFetcher used by TestDriverEnvironment tests.
+  remoting::test::HostListFetcher* test_host_list_fetcher_;
+
+  // Used for running network request tasks.
+  scoped_ptr<base::MessageLoopForIO> message_loop_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChromotingTestDriverEnvironment);
+};
+
+// Unfortunately a global var is how the GTEST framework handles sharing data
+// between tests and keeping long-lived objects around. Used to share access
+// tokens and a host list across tests.
+extern ChromotingTestDriverEnvironment* ChromotingSharedData;
+
+}  // namespace test
+}  // namespace remoting
+
+#endif  // REMOTING_TEST_CHROMOTING_TEST_DRIVER_ENVIRONMENT_H_