SW backend for viewer on Windows

tools/viewer/sk_app/Window.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.
 */
 
 #include "Window.h"
 
 #include "SkSurface.h"
@@ skipping 70 matching lines @@
 
         canvas->flush();
 
         fWindowContext->swapBuffers();
     } else {
         printf("no backbuffer!?\n");
         // try recreating testcontext
     }
 }
 
-void Window::onResize(uint32_t w, uint32_t h) {
+void Window::onResize(int w, int h) {
     fWidth = w;
     fHeight = h;
     fWindowContext->resize(w, h);
 }
 
 const DisplayParams& Window::getDisplayParams() {
     return fWindowContext->getDisplayParams();
 }
 
 void Window::setDisplayParams(const DisplayParams& params) {
     fWindowContext->setDisplayParams(params);
 }
 
 void Window::inval() {
     if (!fIsContentInvalidated) {
         fIsContentInvalidated = true;
         onInval();
     }
 }
 
 void Window::markInvalProcessed() {
     fIsContentInvalidated = false;
 }
 
 sk_sp<SkSurface> Window::getOffscreenSurface(bool forceSRGB) {
     return fWindowContext->createOffscreenSurface(forceSRGB);
 }
 
 }   // namespace sk_app