Add slides to VulkanViewer

tools/vulkan/viewer/GMSlide.h

Index: tools/vulkan/viewer/GMSlide.h
diff --git a/tools/vulkan/viewer/GMSlide.h b/tools/vulkan/viewer/GMSlide.h
new file mode 100644
index 0000000000000000000000000000000000000000..e827287c661c03cf1324eeed57830fa328de0940
--- /dev/null
+++ b/tools/vulkan/viewer/GMSlide.h
@@ -0,0 +1,26 @@
+/*
+* Copyright 2016 Google Inc.
+*
+* Use of this source code is governed by a BSD-style license that can be
+* found in the LICENSE file.
+*/
+
+#ifndef GMSlide_DEFINED
+#define GMSlide_DEFINED
+
+#include "Slide.h"
+#include "gm.h"
+
+class GMSlide : public Slide {
+public:
+    GMSlide(skiagm::GM* gm);
+    ~GMSlide() override;
+
+    void draw(SkCanvas* canvas) override;
+
+private:
+    skiagm::GM* fGM;
+};
+
+
+#endif