Add slides to VulkanViewer

tools/vulkan/viewer/GMSlide.cpp

Index: tools/vulkan/viewer/GMSlide.cpp
diff --git a/tools/vulkan/viewer/GMSlide.cpp b/tools/vulkan/viewer/GMSlide.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..59a00cfcbe8c72d3576582271c8eed8fd7ab860f
--- /dev/null
+++ b/tools/vulkan/viewer/GMSlide.cpp
@@ -0,0 +1,28 @@
+/*
+* Copyright 2016 Google Inc.
+*
+* Use of this source code is governed by a BSD-style license that can be
+* found in the LICENSE file.
+*/
+/*
+* Copyright 2014 Google Inc.
+*
+* Use of this source code is governed by a BSD-style license that can be
+* found in the LICENSE file.
+*/
+
+#include "GMSlide.h"
+#include "SkCanvas.h"
+
+GMSlide::GMSlide(skiagm::GM* gm) : fGM(gm) {
+    fName.printf("GM_%s", gm->getName());
+}
+
+GMSlide::~GMSlide() { delete fGM; }
+
+void GMSlide::draw(SkCanvas* canvas) {
+    // Do we care about timing the draw of the background (once)?
+    // Does the GM ever rely on drawBackground to lazily compute something?
+    fGM->drawBackground(canvas);
+    fGM->drawContent(canvas);
+}