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

components/cronet/android/url_request_adapter.cc

Index: components/cronet/android/url_request_adapter.cc
diff --git a/components/cronet/android/url_request_adapter.cc b/components/cronet/android/url_request_adapter.cc
index 43fb8f416b98e2d85b79c82ffff70d2d1ced11ec..3195c27ebaabe4b4fe1871331755c5d394a5dcc1 100644
--- a/components/cronet/android/url_request_adapter.cc
+++ b/components/cronet/android/url_request_adapter.cc
@@ -86,11 +86,8 @@ void URLRequestAdapter::AppendChunk(const char* bytes, int bytes_len,
   memcpy(buf.get(), bytes, bytes_len);
   context_->PostTaskToNetworkThread(
       FROM_HERE,
-      base::Bind(&URLRequestAdapter::OnAppendChunk,
-                 base::Unretained(this),
-                 Passed(buf.Pass()),
-                 bytes_len,
-                 is_last_chunk));
+      base::Bind(&URLRequestAdapter::OnAppendChunk, base::Unretained(this),
+                 base::Passed(&buf), bytes_len, is_last_chunk));
 }
 
 std::string URLRequestAdapter::GetHeader(const std::string& name) const {