Add ArcEnabled policy implementation

components/arc/test/fake_arc_bridge_bootstrap.h

Index: components/arc/test/fake_arc_bridge_bootstrap.h
diff --git a/components/arc/test/fake_arc_bridge_bootstrap.h b/components/arc/test/fake_arc_bridge_bootstrap.h
new file mode 100644
index 0000000000000000000000000000000000000000..3e4a476fbdcbb17a022d2ee790ee1b23e735db93
--- /dev/null
+++ b/components/arc/test/fake_arc_bridge_bootstrap.h
@@ -0,0 +1,31 @@
+// Copyright 2016 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_ARC_TEST_FAKE_ARC_BRIDGE_BOOTSTRAP_H_
+#define COMPONENTS_ARC_TEST_FAKE_ARC_BRIDGE_BOOTSTRAP_H_
+
+#include "components/arc/arc_bridge_bootstrap.h"
+
+namespace arc {
+
+class FakeArcBridgeInstance;
+
+// A fake ArcBridgeBootstrap that creates a local connection.
+class FakeArcBridgeBootstrap : public ArcBridgeBootstrap {
+ public:
+  explicit FakeArcBridgeBootstrap(FakeArcBridgeInstance* instance);
+  ~FakeArcBridgeBootstrap() override {}

[bartfab (slow), 2016/03/02 14:45:41]

Nit: Do we really need to override this?

[Polina Bondarenko, 2016/03/06 20:22:34]

Yes, g_bootstrap_for_testing is deleted in destructor of ArcBridgeBootstrap.

[bartfab (slow), 2016/03/07 13:44:04]

I do not understand. Yes, ArcBridgeBootstrap::~ArcBridgeBootstrap() will clean
up g_bootstrap_for_testing. What does that have to do with overriding the
method? The inherited destructor will run anyway - you cannot prevent this via
inheritance.

+
+   void Start() override;

[bartfab (slow), 2016/03/02 14:45:41]

Nit: // ArcBridgeBootstrap:

[Polina Bondarenko, 2016/03/06 20:22:34]

Done.

+   void Stop() override;
+
+ private:
+  // Owned by the caller.
+  FakeArcBridgeInstance* instance_;
+  DISALLOW_COPY_AND_ASSIGN(FakeArcBridgeBootstrap);

[bartfab (slow), 2016/03/02 14:45:41]

Nit 1: Add blank line above.
Nit 2: #include "base/macros.h"

[Polina Bondarenko, 2016/03/06 20:22:34]

Done.

+};
+
+} // namespace arc
+
+#endif  // COMPONENTS_ARC_TEST_FAKE_ARC_BRIDGE_BOOTSTRAP_H_