Add sRGB mode toggle to Viewer.

tools/viewer/sk_app/win/Window_win.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_win.h"
 
 #include <tchar.h>
@@ skipping 246 matching lines @@
 
 void Window_win::setTitle(const char* title) {
     SetWindowTextA(fHWnd, title);
 }
 
 void Window_win::show() {
     ShowWindow(fHWnd, SW_SHOW);
 }
 
 
-bool Window_win::attach(BackEndType attachType, int msaaSampleCount) {
+bool Window_win::attach(BackEndType attachType, const DisplayParams& params) {
     if (kVulkan_BackendType != attachType) {
         return false;
     }
 
     ContextPlatformData_win platformData;
     platformData.fHInstance = fHInstance;
     platformData.fHWnd = fHWnd;
 
-    fWindowContext = VulkanWindowContext::Create((void*)&platformData, msaaSampleCount);
+    fWindowContext = VulkanWindowContext::Create((void*)&platformData, params);
 
     return (SkToBool(fWindowContext));
 }
 
 void Window_win::inval() {
     InvalidateRect(fHWnd, nullptr, false);
 }
 
 }   // namespace sk_app