Remove DrawFace enum from GrPipelineBuilder

src/gpu/vk/GrVkPipelineState.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 "GrVkPipelineState.h"
 
 #include "GrPipeline.h"
@@ skipping 469 matching lines @@
     key->reset();
     key->push_back_n(kData_StateKeyOffset);
 
     GrProcessorKeyBuilder b(key);
 
     GrVkRenderTarget* vkRT = (GrVkRenderTarget*)pipeline.getRenderTarget();
     vkRT->simpleRenderPass()->genKey(&b);
 
     pipeline.getStencil().genKey(&b);
 
-    SkASSERT(sizeof(GrPipelineBuilder::DrawFace) <= sizeof(uint32_t));
-    b.add32(pipeline.getDrawFace());
+    SkASSERT(sizeof(GrDrawFace) <= sizeof(uint32_t));
+    b.add32((int32_t)pipeline.getDrawFace());
 
     b.add32(get_blend_info_key(pipeline));
 
     b.add32(primitiveType);
 
     // Set key length
     int keyLength = key->count();
     SkASSERT(0 == (keyLength % 4));
     *reinterpret_cast<uint32_t*>(key->begin()) = SkToU32(keyLength);
 }