Remove discardable_memory::DSMM::{Create,Get}Instance()

services/ui/service.h

Index: services/ui/service.h
diff --git a/services/ui/service.h b/services/ui/service.h
index 7ae9c760f88ef61892d46a2eb325f98a5b9b3884..a33ce82831ae78a649de2f496a63e6e778240f90 100644
--- a/services/ui/service.h
+++ b/services/ui/service.h
@@ -41,6 +41,10 @@
 #include "ui/ozone/public/client_native_pixmap_factory.h"
 #endif
 
+namespace discardable_memory {
+class DiscardableSharedMemoryManager;
+}
+
 namespace display {
 class ScreenManager;
 }
@@ -191,6 +195,9 @@ class Service
   IMERegistrarImpl ime_registrar_;
   IMEServerImpl ime_server_;
 
+  std::unique_ptr<discardable_memory::DiscardableSharedMemoryManager>
+      discardable_shared_memory_manager_;
+
   DISALLOW_COPY_AND_ASSIGN(Service);
 };