Add config options to run different GPU APIs to dm and nanobench

include/gpu/gl/command_buffer/SkCommandBufferGLContext.h

Index: include/gpu/gl/command_buffer/SkCommandBufferGLContext.h
diff --git a/include/gpu/gl/command_buffer/SkCommandBufferGLContext.h b/include/gpu/gl/command_buffer/SkCommandBufferGLContext.h
index 7fece3c83c1a43eb7fd4d85bcfa0e08ae4fa7e51..47f3fd967a3b665217864a8d24690452e20751bd 100644
--- a/include/gpu/gl/command_buffer/SkCommandBufferGLContext.h
+++ b/include/gpu/gl/command_buffer/SkCommandBufferGLContext.h
@@ -16,10 +16,7 @@ class SkCommandBufferGLContext : public SkGLContext {
 public:
     ~SkCommandBufferGLContext() override;
 
-    static SkCommandBufferGLContext* Create(GrGLStandard forcedGpuAPI) {
-        if (kGL_GrGLStandard == forcedGpuAPI) {
-            return nullptr;
-        }
+    static SkCommandBufferGLContext* Create() {
         SkCommandBufferGLContext* ctx = new SkCommandBufferGLContext;
         if (!ctx->isValid()) {
             delete ctx;