Convert remaining scoped_ptr -> std::unique_ptr in //mojo/edk (minus js).

mojo/edk/system/transport_data.cc

Index: mojo/edk/system/transport_data.cc
diff --git a/mojo/edk/system/transport_data.cc b/mojo/edk/system/transport_data.cc
index 417a6135f42402feefb6c83dd64b4fe9f43af614..805d24c4e0ec0ac38b983dc4a3fcb9cc1beddfd4 100644
--- a/mojo/edk/system/transport_data.cc
+++ b/mojo/edk/system/transport_data.cc
@@ -6,6 +6,8 @@
 
 #include <string.h>
 
+#include <utility>
+
 #include "base/logging.h"
 #include "mojo/edk/system/channel.h"
 #include "mojo/edk/system/configuration.h"
@@ -194,7 +196,7 @@ TransportData::TransportData(std::unique_ptr<DispatcherVector> dispatchers,
 TransportData::TransportData(
     embedder::ScopedPlatformHandleVectorPtr platform_handles,
     size_t serialized_platform_handle_size)
-    : buffer_size_(), platform_handles_(platform_handles.Pass()) {
+    : buffer_size_(), platform_handles_(std::move(platform_handles)) {
   buffer_size_ = MessageInTransit::RoundUpMessageAlignment(
       sizeof(Header) +
       platform_handles_->size() * serialized_platform_handle_size);