unique_ptr_migration: clean up references to scoped_ptr as of r389721

chrome/browser/memory/tab_manager_delegate_chromeos.cc

Index: chrome/browser/memory/tab_manager_delegate_chromeos.cc
diff --git a/chrome/browser/memory/tab_manager_delegate_chromeos.cc b/chrome/browser/memory/tab_manager_delegate_chromeos.cc
index 6753f41b22102dbbe9c671b224849b26f1fe2e3d..76ff0d6c62fa3db4ae2497f3bf3eaf42a74a69e4 100644
--- a/chrome/browser/memory/tab_manager_delegate_chromeos.cc
+++ b/chrome/browser/memory/tab_manager_delegate_chromeos.cc
@@ -203,7 +203,7 @@ class TabManagerDelegate::FocusedProcess {
   }
 
  private:
-  scoped_ptr<Data> data_;
+  std::unique_ptr<Data> data_;
   // Protects rw access to data_;
   base::Lock lock_;
 };