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

mojo/edk/system/master_connection_manager.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/edk/system/master_connection_manager.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 180 matching lines @@
       bytes));
 
   if (result == Result::SUCCESS_CONNECT_NEW_CONNECTION) {
     DCHECK_EQ(message_view.subtype(),
               MessageInTransit::Subtype::CONNECTION_MANAGER_CONNECT);
     DCHECK(platform_handle.is_valid());
     embedder::ScopedPlatformHandleVectorPtr platform_handles(
         new embedder::PlatformHandleVector());
     platform_handles->push_back(platform_handle.release());
     response->SetTransportData(util::MakeUnique<TransportData>(
-        platform_handles.Pass(),
+        std::move(platform_handles),
         raw_channel_->GetSerializedPlatformHandleSize()));
   } else {
     DCHECK(!platform_handle.is_valid());
   }
 
   if (!raw_channel_->WriteMessage(std::move(response))) {
     LOG(ERROR) << "WriteMessage failed";
     FatalError();  // WARNING: This destroys us.
     return;
   }
@@ skipping 525 matching lines @@
 }
 
 void MasterConnectionManager::AssertOnPrivateThread() const {
   // This should only be called after |Init()| and before |Shutdown()|.
   DCHECK(private_thread_.message_loop());
   DCHECK_EQ(base::MessageLoop::current(), private_thread_.message_loop());
 }
 
 }  // namespace system
 }  // namespace mojo