Added the Vulkan Context Provider implementation.

content/renderer/gpu/compositor_output_surface.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_RENDERER_GPU_COMPOSITOR_OUTPUT_SURFACE_H_
 #define CONTENT_RENDERER_GPU_COMPOSITOR_OUTPUT_SURFACE_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 30 matching lines @@
 class CompositorOutputSurface
     : NON_EXPORTED_BASE(public cc::OutputSurface),
       NON_EXPORTED_BASE(public base::NonThreadSafe) {
  public:
   CompositorOutputSurface(
       int32_t routing_id,
       uint32_t output_surface_id,
       const scoped_refptr<ContextProviderCommandBuffer>& context_provider,
       const scoped_refptr<ContextProviderCommandBuffer>&
           worker_context_provider,
-#if defined(ENABLE_VULKAN)
       const scoped_refptr<cc::VulkanContextProvider>& vulkan_context_provider,
-#endif
       std::unique_ptr<cc::SoftwareOutputDevice> software,
       scoped_refptr<FrameSwapMessageQueue> swap_frame_message_queue,
       bool use_swap_compositor_frame_message);
   ~CompositorOutputSurface() override;
 
   // cc::OutputSurface implementation.
   bool BindToClient(cc::OutputSurfaceClient* client) override;
   void DetachFromClient() override;
   void SwapBuffers(cc::CompositorFrame* frame) override;
 
@@ skipping 43 matching lines @@
 
   // TODO(danakj): Remove this when crbug.com/311404
   bool layout_test_mode_;
   std::unique_ptr<cc::CompositorFrameAck> layout_test_previous_frame_ack_;
   base::WeakPtrFactory<CompositorOutputSurface> weak_ptrs_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_GPU_COMPOSITOR_OUTPUT_SURFACE_H_