Rename VulkanViewer to Viewer, take 2.

tools/vulkan/viewer/GMSlide.cpp

-/*
-* 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);
-}
-
-bool GMSlide::animate(const SkAnimTimer& timer) {
-    return fGM->animate(timer);
-}