[Chromecast] Add Initialize/Finalize to RebootShlib api.

Need to be able to pass commandline args to reboot shlib, so add
Initialize method (and corresponding finalize).

BUG= internal b/27494734
TEST= built for device and tested reboot api

Review-Url: https://codereview.chromium.org/2187703004
Cr-Commit-Position: refs/heads/master@{#408415}

chromecast/public/reboot_shlib.h

@@ -5,6 +5,9 @@
 #ifndef CHROMECAST_PUBLIC_REBOOT_SHLIB_H_
 #define CHROMECAST_PUBLIC_REBOOT_SHLIB_H_
 
+#include <string>
+#include <vector>
+
 #include "chromecast_export.h"
 
 namespace chromecast {
@@ -56,6 +59,12 @@ class CHROMECAST_EXPORT RebootShlib {
     FDR = 8,
   };
 
+  // Initializes any platform-specific reboot systems.
+  static void Initialize(const std::vector<std::string>& argv);
+
+  // Tears down and uninitializes any platform-specific reboot systems.
+  static void Finalize();
+
   // Returns whether this shlib is supported. If this returns true, it
   // indicates that IsRebootSourceSupported will be true for at least one
   // RebootSource.

chromecast/system/reboot/reboot_dummy.cc

@@ -13,6 +13,10 @@
 
 namespace chromecast {
 
+void RebootShlib::Initialize(const std::vector<std::string>& /* argv */) {}
+
+void RebootShlib::Finalize() {}
+
 bool RebootShlib::IsSupported() {
   return false;
 }

chromecast/system/reboot/reboot_util.h

@@ -2,8 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROMECAST_INTERNAL_SYSTEM_REBOOT_REBOOT_UTIL_H_
-#define CHROMECAST_INTERNAL_SYSTEM_REBOOT_REBOOT_UTIL_H_
+#ifndef CHROMECAST_SYSTEM_REBOOT_REBOOT_UTIL_H_
+#define CHROMECAST_SYSTEM_REBOOT_REBOOT_UTIL_H_
+
+#include <string>
+#include <vector>
 
 #include "chromecast/public/reboot_shlib.h"
 
@@ -17,6 +20,9 @@ namespace chromecast {
 class RebootUtil {
  public:
 
+  static void Initialize(const std::vector<std::string>& argv);
+  static void Finalize();
+
   // Indicates if any RebootSources are supported for rebooting.
   static bool IsRebootSupported();
 
@@ -49,4 +55,4 @@ class RebootUtil {
 
 }  // namespace chromecast
 
-#endif  // CHROMECAST_INTERNAL_SYSTEM_REBOOT_REBOOT_UTIL_H_
+#endif  // CHROMECAST_SYSTEM_REBOOT_REBOOT_UTIL_H_

chromecast/system/reboot/reboot_util_core.cc

@@ -13,6 +13,16 @@
 
 namespace chromecast {
 
+// static
+void RebootUtil::Initialize(const std::vector<std::string>& argv) {
+  RebootShlib::Initialize(argv);
+}
+
+// static
+void RebootUtil::Finalize() {
+  RebootShlib::Finalize();
+}
+
 // static
 bool RebootUtil::IsRebootSupported() {
   return RebootShlib::IsSupported();