Remove a DCHECK when using Vulkan on Windows 10

This DCHECK in the default initialization path prevents Chrome from running
in Windows. Remove this DCHECK and use a error log instead when Vulkan is
enabled.

Bug: 1010584
Change-Id: I52dfab8ee07c2a555c155722e632f974cfbbdf59
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1842039Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Commit-Queue: Maggie Chen <magchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#703099}

gpu/command_buffer/service/shared_image_factory.cc

@@ -105,7 +105,10 @@ SharedImageFactory::SharedImageFactory(
           workarounds, gpu_feature_info, use_gl);
 #else
   // Others
-  DCHECK(!using_vulkan_);
+  if (using_vulkan_)
+    LOG(ERROR) << "ERROR: using_vulkan_ = true and interop_backing_factory_ is "
+                  "not set";
+
 #endif
   if (enable_wrapped_sk_image && context_state) {
     wrapped_sk_image_factory_ =