Convert //ppapi to use std::unique_ptr

ppapi/shared_impl/tracked_callback.h

Index: ppapi/shared_impl/tracked_callback.h
diff --git a/ppapi/shared_impl/tracked_callback.h b/ppapi/shared_impl/tracked_callback.h
index b80e680aeddc138489eaef8b109cf101fe5fd8e3..89690c38c04b679d6e663f89bb8bc34f5faf4ae5 100644
--- a/ppapi/shared_impl/tracked_callback.h
+++ b/ppapi/shared_impl/tracked_callback.h
@@ -8,12 +8,12 @@
 #include <stdint.h>
 
 #include <map>
+#include <memory>
 #include <set>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/synchronization/condition_variable.h"
 #include "base/synchronization/lock.h"
 #include "ppapi/c/pp_completion_callback.h"
@@ -192,7 +192,7 @@ class PPAPI_SHARED_EXPORT TrackedCallback
   // Used for pausing/waking the blocked thread if this is a blocking completion
   // callback. Note that in-process, there is no lock, blocking callbacks are
   // not allowed, and therefore this pointer will be NULL.
-  scoped_ptr<base::ConditionVariable> operation_completed_condvar_;
+  std::unique_ptr<base::ConditionVariable> operation_completed_condvar_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(TrackedCallback);
 };