Add vksrgb config to dm (Vulkan sRGB). Fix help formatting of vk.

tools/gpu/GrContextFactory.cpp

 
 /*
  * 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 "GrContextFactory.h"
 #include "gl/GLTestContext.h"
@@ skipping 145 matching lines @@
                 if (!glInterface) {
                     return ContextInfo();
                 }
             }
             backendContext = reinterpret_cast<GrBackendContext>(glInterface.get());
             break;
         }
 #ifdef SK_VULKAN
         case kVulkan_GrBackend:
             SkASSERT(kVulkan_ContextType == type);
-            if ((kEnableNVPR_ContextOptions & options) ||
-                (kRequireSRGBSupport_ContextOptions & options)) {
+            if (kEnableNVPR_ContextOptions & options) {
                 return ContextInfo();
             }
             testCtx.reset(CreatePlatformVkTestContext());
             if (!testCtx) {
                 return ContextInfo();
             }
 
             // There is some bug (either in Skia or the NV Vulkan driver) where VkDevice
             // destruction will hang occaisonally. For some reason having an existing GL
             // context fixes this.
@@ skipping 29 matching lines @@
     Context& context = fContexts.push_back();
     context.fBackend = backend;
     context.fTestContext = testCtx.release();
     context.fGrContext = SkRef(grCtx.get());
     context.fType = type;
     context.fOptions = options;
     context.fAbandoned = false;
     return ContextInfo(context.fBackend, context.fTestContext, context.fGrContext);
 }
 }  // namespace sk_gpu_test