Adds more to viewmanager

mojo/services/view_manager/ids.h

Index: mojo/services/view_manager/ids.h
diff --git a/mojo/services/view_manager/ids.h b/mojo/services/view_manager/ids.h
index 257402bb91bdc2cf45fd6ae9f684629e4faf2e87..d42e18fa1adb59fb177a17b9d918acb58598777a 100644
--- a/mojo/services/view_manager/ids.h
+++ b/mojo/services/view_manager/ids.h
@@ -23,6 +23,10 @@ struct MOJO_VIEW_MANAGER_EXPORT NodeId {
         other.node_id == node_id;
   }
 
+  bool operator!=(const NodeId& other) const {
+    return !(*this == other);
+  }
+
   uint16_t connection_id;
   uint16_t node_id;
 };
@@ -39,6 +43,10 @@ struct MOJO_VIEW_MANAGER_EXPORT ViewId {
         other.view_id == view_id;
   }
 
+  bool operator!=(const ViewId& other) const {
+    return !(*this == other);
+  }
+
   uint16_t connection_id;
   uint16_t view_id;
 };
@@ -64,6 +72,10 @@ inline ViewId ViewIdFromTransportId(uint32_t id) {
   return ViewId(FirstIdFromTransportId(id), SecondIdFromTransportId(id));
 }
 
+inline uint32_t ViewIdToTransportId(const ViewId& id) {
+  return (id.connection_id << 16) | id.view_id;
+}
+
 }  // namespace view_manager
 }  // namespace services
 }  // namespace mojo