Reland: [Sync] Record sync memory usage in histogram broken by datatypes

components/sync/driver/model_type_controller.cc

Index: components/sync/driver/model_type_controller.cc
diff --git a/components/sync/driver/model_type_controller.cc b/components/sync/driver/model_type_controller.cc
index 8e98059415eaecb64f5cac21c0e69bfda79a9217..5f67856938aa6c7ece367f49599cad6dfae3b5ec 100644
--- a/components/sync/driver/model_type_controller.cc
+++ b/components/sync/driver/model_type_controller.cc
@@ -236,6 +236,11 @@ void ModelTypeController::GetStatusCounters(
                  base::Bind(&ModelTypeDebugInfo::GetStatusCounters, callback));
 }
 
+void ModelTypeController::RecordMemoryUsageHistogram() {
+  PostBridgeTask(FROM_HERE,
+                 base::Bind(&ModelTypeDebugInfo::RecordMemoryUsageHistogram));
+}
+
 void ModelTypeController::ReportModelError(const ModelError& error) {
   DCHECK(CalledOnValidThread());
   LoadModelsDone(UNRECOVERABLE_ERROR,