Convert //tools to use std::unique_ptr

tools/android/forwarder2/forwarders_manager.cc

Index: tools/android/forwarder2/forwarders_manager.cc
diff --git a/tools/android/forwarder2/forwarders_manager.cc b/tools/android/forwarder2/forwarders_manager.cc
index fb6890fe20d7086b5cb4dbf35f723b7e8e71449d..c3dd0264dfa30f57da1306a621ef985bc616ad87 100644
--- a/tools/android/forwarder2/forwarders_manager.cc
+++ b/tools/android/forwarder2/forwarders_manager.cc
@@ -31,8 +31,9 @@ ForwardersManager::~ForwardersManager() {
   deletion_notifier_.Notify();
 }
 
-void ForwardersManager::CreateAndStartNewForwarder(scoped_ptr<Socket> socket1,
-                                                   scoped_ptr<Socket> socket2) {
+void ForwardersManager::CreateAndStartNewForwarder(
+    std::unique_ptr<Socket> socket1,
+    std::unique_ptr<Socket> socket2) {
   // Note that the internal Forwarder vector is populated on the internal thread
   // which is the only thread from which it's accessed.
   thread_.task_runner()->PostTask(
@@ -47,8 +48,8 @@ void ForwardersManager::CreateAndStartNewForwarder(scoped_ptr<Socket> socket1,
 }
 
 void ForwardersManager::CreateNewForwarderOnInternalThread(
-    scoped_ptr<Socket> socket1,
-    scoped_ptr<Socket> socket2) {
+    std::unique_ptr<Socket> socket1,
+    std::unique_ptr<Socket> socket2) {
   DCHECK(thread_.task_runner()->RunsTasksOnCurrentThread());
   forwarders_.push_back(new Forwarder(std::move(socket1), std::move(socket2)));
 }