Auto merge of #23696 - servo:hl, r=jdm

Add UWP port - bis

This is #23658 with some fixes:
- removed nspr from DLL dependencies (was breaking VS build)
- exclude symbols from header file (was breaking VS build)
- rebased

Before merging:
- please check the rebased commit that introduces the `--uwp` option (things moved around since https://github.com/servo/servo/commit/7c85dc09b59e653caf60cb18d3b3fdea2ba4d4ae)
- should we wait until the WR fix lands upstream?

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1 files changed, 37 insertions, 0 deletions

diff --git a/support/hololens/OpenGLESPage.xaml.h b/support/hololens/OpenGLESPage.xaml.h
new file mode 100644
index 00000000000..ab2c8c2fd80
--- /dev/null
+++ b/support/hololens/OpenGLESPage.xaml.h
@@ -0,0 +1,37 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+#pragma once
+
+#include "OpenGLES.h"
+#include "OpenGLESPage.g.h"
+#include "Servo.h"
+
+namespace hlservo {
+public
+ref class OpenGLESPage sealed {
+public:
+    OpenGLESPage();
+    virtual ~OpenGLESPage();
+
+    internal : OpenGLESPage(OpenGLES* openGLES);
+
+private:
+    void OnPageLoaded(Platform::Object ^ sender, Windows::UI::Xaml::RoutedEventArgs ^ e);
+    void OnVisibilityChanged(Windows::UI::Core::CoreWindow ^ sender,
+        Windows::UI::Core::VisibilityChangedEventArgs ^ args);
+    void CreateRenderSurface();
+    void DestroyRenderSurface();
+    void RecoverFromLostDevice();
+    void StartRenderLoop();
+    void StopRenderLoop();
+
+    OpenGLES* mOpenGLES;
+
+    EGLSurface mRenderSurface;
+    Concurrency::critical_section mRenderSurfaceCriticalSection;
+    Windows::Foundation::IAsyncAction ^ mRenderLoopWorker;
+    Servo* mServo;
+};
+}