Undoing revert, cl is not the cause of gcm crash on canary.

components/copresence/test/fake_directive_handler.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 COMPONENTS_COPRESENCE_TEST_FAKE_DIRECTIVE_HANDLER_H_
+#define COMPONENTS_COPRESENCE_TEST_FAKE_DIRECTIVE_HANDLER_H_
+
+#include <string>
+#include <vector>
+
+#include "components/copresence/handlers/directive_handler.h"
+
+namespace copresence {
+
+// TODO(ckehoe): Make DirectiveHandler an interface.
+class FakeDirectiveHandler final : public DirectiveHandler {
+ public:
+  FakeDirectiveHandler();
+  ~FakeDirectiveHandler() override;
+
+  const std::vector<std::string>& added_directives() const {
+    return added_directives_;
+  }
+
+  const std::vector<std::string>& removed_directives() const {
+    return removed_directives_;
+  }
+
+  void Start(WhispernetClient* /* whispernet_client */,
+             const TokensCallback& /* tokens_cb */) override {}
+
+  void AddDirective(const Directive& directive) override;
+
+  void RemoveDirectives(const std::string& op_id) override;
+
+  const std::string GetCurrentAudioToken(AudioType type) const override;
+
+  bool IsAudioTokenHeard(AudioType type) const override;
+
+ private:
+  std::vector<std::string> added_directives_;
+  std::vector<std::string> removed_directives_;
+
+  DISALLOW_COPY_AND_ASSIGN(FakeDirectiveHandler);
+};
+
+}  // namespace copresence
+
+#endif  // COMPONENTS_COPRESENCE_TEST_FAKE_DIRECTIVE_HANDLER_H_