Replace scoped_ptr with unique_ptr everywhere

webrtc/system_wrappers/include/aligned_malloc.h

Index: webrtc/system_wrappers/include/aligned_malloc.h
diff --git a/webrtc/system_wrappers/include/aligned_malloc.h b/webrtc/system_wrappers/include/aligned_malloc.h
index 277abec020d10444bf81cb2873bd4533397dde8b..bdd82ccfd8c4235752253ee3416997d4ee33850d 100644
--- a/webrtc/system_wrappers/include/aligned_malloc.h
+++ b/webrtc/system_wrappers/include/aligned_malloc.h
@@ -46,8 +46,8 @@ T* AlignedMalloc(size_t size, size_t alignment) {
   return reinterpret_cast<T*>(AlignedMalloc(size, alignment));
 }
 
-// Deleter for use with scoped_ptr. E.g., use as
-//   scoped_ptr<Foo, AlignedFreeDeleter> foo;
+// Deleter for use with unique_ptr. E.g., use as
+//   std::unique_ptr<Foo, AlignedFreeDeleter> foo;
 struct AlignedFreeDeleter {
   inline void operator()(void* ptr) const {
     AlignedFree(ptr);