metrics: Add dbus interface for GetRandomPerfOutput

chromeos/dbus/fake_debug_daemon_client.cc

Index: chromeos/dbus/fake_debug_daemon_client.cc
diff --git a/chromeos/dbus/fake_debug_daemon_client.cc b/chromeos/dbus/fake_debug_daemon_client.cc
index e7f6ba418e8b34eed8a6bf6f4e674ce4bbd9d786..8b2124d0a0dd8bdd5430ff29f9488e63601b51e2 100644
--- a/chromeos/dbus/fake_debug_daemon_client.cc
+++ b/chromeos/dbus/fake_debug_daemon_client.cc
@@ -87,6 +87,16 @@ void FakeDebugDaemonClient::GetPerfData(uint32_t duration,
                                                 base::Bind(callback, data));
 }
 
+void FakeDebugDaemonClient::GetPerfOutput(
+    uint32_t duration,
+    const GetPerfOutputCallback& callback) {
+  int status = 0;
+  std::vector<uint8> perf_data;
+  std::vector<uint8> perf_stat;
+  base::ThreadTaskRunnerHandle::Get()->PostTask(
+      FROM_HERE, base::Bind(callback, status, perf_data, perf_stat));
+}
+
 void FakeDebugDaemonClient::GetScrubbedLogs(const GetLogsCallback& callback) {
   std::map<std::string, std::string> sample;
   sample["Sample Scrubbed Log"] = "Your email address is xxxxxxxx";