Rename VulkanViewer to Viewer, take 2.

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
deleted file mode 100644
index 6b03527202a04fdbdc0963c3ee80e8f9d02a2beb..0000000000000000000000000000000000000000
--- a/tools/vulkan/viewer/GMSlide.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
-* 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;
-
-    SkISize getDimensions() const override { return fGM->getISize(); }
-
-    void draw(SkCanvas* canvas) override;
-    bool animate(const SkAnimTimer&) override;
-
-private:
-    skiagm::GM* fGM;
-};
-
-
-#endif