Add GetLog method call to DebugDaemonClient

chromeos/dbus/debug_daemon_client.h

 // Copyright (c) 2012 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 CHROMEOS_DBUS_DEBUG_DAEMON_CLIENT_H_
 #define CHROMEOS_DBUS_DEBUG_DAEMON_CLIENT_H_
 
 #include <stdint.h>
 #include <sys/types.h>
 
@@ skipping 96 matching lines @@
   // waiting for the result.
   virtual void GetPerfOutput(base::TimeDelta duration,
                              const std::vector<std::string>& perf_args,
                              int file_descriptor,
                              const DBusMethodErrorCallback& error_callback) = 0;
 
   // Callback type for GetScrubbedLogs(), GetAllLogs() or GetUserLogFiles().
   using GetLogsCallback =
       base::Callback<void(bool succeeded,
                           const std::map<std::string, std::string>& logs)>;
+  // Callback type for GetLog().
+  using GetLogCallback =
+      base::Callback<void(bool succeeded, const std::string& result)>;
 
   // Gets scrubbed logs from debugd.
   virtual void GetScrubbedLogs(const GetLogsCallback& callback) = 0;
 
   // Gets the scrubbed logs from debugd that are very large and cannot be
   // returned directly from D-Bus. These logs will include ARC and cheets
   // system information.
   virtual void GetScrubbedBigLogs(const GetLogsCallback& callback) = 0;
 
   // Gets all logs collected by debugd.
   virtual void GetAllLogs(const GetLogsCallback& callback) = 0;
 
   // 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 GetLogCallback& callback) = 0;
+
   virtual void SetStopAgentTracingTaskRunner(
       scoped_refptr<base::TaskRunner> task_runner) = 0;
 
   // Returns an empty StopAgentTracingCallback that does nothing.
   static StopAgentTracingCallback EmptyStopAgentTracingCallback();
 
   // Called once TestICMP() is complete. Takes two parameters:
   // - succeeded: information was obtained successfully.
   // - status: information about ICMP connectivity to a specified host as json.
   //   For details please refer to
@@ skipping 115 matching lines @@
   // Create() should be used instead.
   DebugDaemonClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DebugDaemonClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_DEBUG_DAEMON_CLIENT_H_