Auto merge of #21985 - asajeffrey:magicleap, r=jdm

Support building for Magic Leap.

<!-- Please describe your changes on the following line: -->

This PR gets Servo to build for Magic Leap, and provides a dummy Servo2D app.

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: -->
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes do not require tests because it's a port to a new architecture

<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->

<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->

<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/21985)
<!-- Reviewable:end -->

1 files changed, 48 insertions, 0 deletions

diff --git a/support/magicleap/Servo2D/code/inc.gen/SceneDescriptor.h b/support/magicleap/Servo2D/code/inc.gen/SceneDescriptor.h
new file mode 100644
index 00000000000..db950700a13
--- /dev/null
+++ b/support/magicleap/Servo2D/code/inc.gen/SceneDescriptor.h
@@ -0,0 +1,48 @@
+// -- WARNING -- WARNING -- WARNING -- WARNING -- WARNING -- WARNING -- 
+//
+// THE CONTENTS OF THIS FILE IS GENERATED BY CODE AND
+// ANY MODIFICATIONS WILL BE OVERWRITTEN
+//
+// -- WARNING -- WARNING -- WARNING -- WARNING -- WARNING -- WARNING -- 
+
+// %BANNER_BEGIN%
+// ---------------------------------------------------------------------
+// %COPYRIGHT_BEGIN%
+//
+// Copyright (c) 2018 Magic Leap, Inc. All Rights Reserved.
+// Use of this file is governed by the Creator Agreement, located
+// here: https://id.magicleap.com/creator-terms
+//
+// %COPYRIGHT_END%
+// ---------------------------------------------------------------------
+// %BANNER_END%
+
+#pragma once
+
+#include <string>
+#include <map>
+
+// data class 
+class SceneDescriptor {
+  public:
+
+    typedef std::map<std::string /* exportedNodeName */, const std::string& /* exportedNodeId */> ExportedNodeReferences;
+
+    SceneDescriptor(const char* exportedName, const char* id, const char* sceneGraphFilePath, const char* resourceModelFilePath, const ExportedNodeReferences& exportedNodeReferences, bool initiallyInstanced);
+    const std::string& getExportedName() const;
+    const std::string& getId() const;
+    const std::string& getSceneGraphPath() const;
+    const std::string& getResourceModelPath() const;
+    const ExportedNodeReferences & getExportedNodeReferences() const;
+    bool getInitiallyInstanced() const;
+
+  private:
+    std::string exportedName_;
+    std::string id_;
+    std::string sceneGraphPath_;
+    std::string resourceModelPath_;
+    const ExportedNodeReferences& exportedNodeReferences_;
+    bool initiallyInstanced_;
+};
+
+typedef std::map<std::string /* exportedName */, const SceneDescriptor&> SceneDescriptorReferences;