Use std::default_delete as the default deleter for scoped_ptr.

media/video/video_decode_accelerator.cc

Index: media/video/video_decode_accelerator.cc
diff --git a/media/video/video_decode_accelerator.cc b/media/video/video_decode_accelerator.cc
index 0c6b2b98ad8746f4110bffceea84f7294154f4e6..7449a2aec7f56c087b59183c1d8f70494a077a65 100644
--- a/media/video/video_decode_accelerator.cc
+++ b/media/video/video_decode_accelerator.cc
@@ -38,14 +38,11 @@ VideoDecodeAccelerator::SupportedProfile::~SupportedProfile() {
 
 } // namespace media
 
-namespace base {
+namespace std {
 
-void DefaultDeleter<media::VideoDecodeAccelerator>::operator()(
-    void* video_decode_accelerator) const {
-  static_cast<media::VideoDecodeAccelerator*>(video_decode_accelerator)->
-      Destroy();
+void default_delete<media::VideoDecodeAccelerator>::operator()(
+    media::VideoDecodeAccelerator* vda) const {
+  vda->Destroy();
 }
 
-}  // namespace base
-
-
+}  // namespace std