Convert Pass()→std::move() in //content/browser

content/browser/background_sync/background_sync_service_impl.cc

Index: content/browser/background_sync/background_sync_service_impl.cc
diff --git a/content/browser/background_sync/background_sync_service_impl.cc b/content/browser/background_sync/background_sync_service_impl.cc
index f90433d4624a263687a84509e70b3c4c2c4030db..ffab6abc995915522e9a114c970dd535b672e27b 100644
--- a/content/browser/background_sync/background_sync_service_impl.cc
+++ b/content/browser/background_sync/background_sync_service_impl.cc
@@ -4,6 +4,8 @@
 
 #include "content/browser/background_sync/background_sync_service_impl.h"
 
+#include <utility>
+
 #include "background_sync_registration_handle.h"
 #include "base/memory/weak_ptr.h"
 #include "base/stl_util.h"
@@ -41,7 +43,7 @@ SyncRegistrationPtr ToMojoRegistration(
       static_cast<content::BackgroundSyncPowerState>(in.options()->power_state);
   out->network_state = static_cast<content::BackgroundSyncNetworkState>(
       in.options()->network_state);
-  return out.Pass();
+  return out;
 }
 
 }  // namespace
@@ -97,7 +99,7 @@ BackgroundSyncServiceImpl::BackgroundSyncServiceImpl(
     BackgroundSyncContextImpl* background_sync_context,
     mojo::InterfaceRequest<BackgroundSyncService> request)
     : background_sync_context_(background_sync_context),
-      binding_(this, request.Pass()),
+      binding_(this, std::move(request)),
       weak_ptr_factory_(this) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   DCHECK(background_sync_context);
@@ -212,7 +214,7 @@ void BackgroundSyncServiceImpl::DuplicateRegistrationHandle(
   active_handles_.AddWithID(registration_handle.release(),
                             handle_ptr->handle_id());
   SyncRegistrationPtr mojoResult = ToMojoRegistration(*handle_ptr);
-  callback.Run(BACKGROUND_SYNC_ERROR_NONE, mojoResult.Pass());
+  callback.Run(BACKGROUND_SYNC_ERROR_NONE, std::move(mojoResult));
 }
 
 void BackgroundSyncServiceImpl::ReleaseRegistration(
@@ -260,7 +262,7 @@ void BackgroundSyncServiceImpl::OnRegisterResult(
   active_handles_.AddWithID(result.release(), result_ptr->handle_id());
   SyncRegistrationPtr mojoResult = ToMojoRegistration(*result_ptr);
   callback.Run(static_cast<content::BackgroundSyncError>(status),
-               mojoResult.Pass());
+               std::move(mojoResult));
 }
 
 void BackgroundSyncServiceImpl::OnUnregisterResult(
@@ -287,7 +289,7 @@ void BackgroundSyncServiceImpl::OnGetRegistrationsResult(
   result_registrations->weak_clear();
 
   callback.Run(static_cast<content::BackgroundSyncError>(status),
-               mojo_registrations.Pass());
+               std::move(mojo_registrations));
 }
 
 void BackgroundSyncServiceImpl::OnNotifyWhenFinishedResult(