Consolidate OutputSurface constructors into GL vs Vulkan.

cc/output/overlay_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "cc/base/region.h"
@@ skipping 116 matching lines @@
     : OverlayProcessor(surface) {
 }
 
 size_t DefaultOverlayProcessor::GetStrategyCount() {
   return strategies_.size();
 }
 
 class OverlayOutputSurface : public OutputSurface {
  public:
   explicit OverlayOutputSurface(scoped_refptr<ContextProvider> context_provider)
-      : OutputSurface(context_provider) {
+      : OutputSurface(context_provider, nullptr, nullptr) {
     surface_size_ = kDisplaySize;
     device_scale_factor_ = 1;
     is_displayed_as_overlay_plane_ = true;
   }
 
   void SetScaleFactor(float scale_factor) {
     device_scale_factor_ = scale_factor;
   }
 
   // OutputSurface implementation
@@ skipping 1474 matching lines @@
 
   // This completion corresponds to the third frame.
   SwapBuffersComplete();
   EXPECT_FALSE(resource_provider_->InUseByConsumer(resource1));
   EXPECT_FALSE(resource_provider_->InUseByConsumer(resource2));
   EXPECT_FALSE(resource_provider_->InUseByConsumer(resource3));
 }
 
 }  // namespace
 }  // namespace cc