Add GetLog method call to DebugDaemonClient

chromeos/dbus/debug_daemon_client.h

Index: chromeos/dbus/debug_daemon_client.h
diff --git a/chromeos/dbus/debug_daemon_client.h b/chromeos/dbus/debug_daemon_client.h
index b80ab61525e2c673cb16a4e1a395ab208e94367d..5d69323d3040e90f8657779778150a08808b0d60 100644
--- a/chromeos/dbus/debug_daemon_client.h
+++ b/chromeos/dbus/debug_daemon_client.h
@@ -129,6 +129,10 @@ class CHROMEOS_EXPORT DebugDaemonClient
   // Gets list of user log files that must be read by Chrome.
   virtual void GetUserLogFiles(const GetLogsCallback& callback) = 0;
 
+  // Gets an individual log source provided by debugd.
+  virtual void GetLog(const std::string& log_name,
+                      const GetLogsCallback& callback) = 0;
+
   virtual void SetStopAgentTracingTaskRunner(
       scoped_refptr<base::TaskRunner> task_runner) = 0;