Reduce FakeArcBridgeService usage.

components/arc/arc_bridge_service.cc

 // 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.
 
 #include "components/arc/arc_bridge_service.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/feature_list.h"
@@ skipping 25 matching lines @@
   return command_line->HasSwitch(chromeos::switches::kEnableArc) ||
          (command_line->HasSwitch(chromeos::switches::kArcAvailable) &&
           base::FeatureList::IsEnabled(kArcEnabledFeature));
 }
 
 // static
 bool ArcBridgeService::GetAvailable(const base::CommandLine* command_line) {
   return command_line->HasSwitch(chromeos::switches::kArcAvailable);
 }
 
+void ArcBridgeService::RequestStart() {
+  NOTREACHED();
+}
+
+void ArcBridgeService::RequestStop() {
+  NOTREACHED();
+}
+
+void ArcBridgeService::OnShutdown() {
+  NOTREACHED();
+}
+
 void ArcBridgeService::AddObserver(Observer* observer) {
   DCHECK(CalledOnValidThread());
   observer_list_.AddObserver(observer);
 }
 
 void ArcBridgeService::RemoveObserver(Observer* observer) {
   DCHECK(CalledOnValidThread());
   observer_list_.RemoveObserver(observer);
 }
 
@@ skipping 32 matching lines @@
     CASE_IMPL(LOW_DISK_SPACE);
     CASE_IMPL(CRASH);
 #undef CASE_IMPL
   }
 
   // In case of unexpected value, output the int value.
   return os << "StopReason(" << static_cast<int>(reason) << ")";
 }
 
 }  // namespace arc