Added the Vulkan Context Provider implementation.

content/renderer/gpu/mailbox_output_surface.cc

 // 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.
 
 #include "content/renderer/gpu/mailbox_output_surface.h"
 
 #include "base/logging.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/compositor_frame_ack.h"
 #include "cc/output/gl_frame_data.h"
@@ skipping 15 matching lines @@
     int32_t routing_id,
     uint32_t output_surface_id,
     const scoped_refptr<ContextProviderCommandBuffer>& context_provider,
     const scoped_refptr<ContextProviderCommandBuffer>& worker_context_provider,
     scoped_refptr<FrameSwapMessageQueue> swap_frame_message_queue,
     cc::ResourceFormat format)
     : CompositorOutputSurface(routing_id,
                               output_surface_id,
                               context_provider,
                               worker_context_provider,
-#if defined(ENABLE_VULKAN)
                               nullptr,
-#endif
                               nullptr,
                               swap_frame_message_queue,
                               true),
       fbo_(0),
       is_backbuffer_discarded_(false),
       format_(format) {
   pending_textures_.push_back(TransferableFrame());
   capabilities_.uses_default_gl_framebuffer = false;
 }
 
@@ skipping 183 matching lines @@
 
 MailboxOutputSurface::TransferableFrame::TransferableFrame() : texture_id(0) {}
 
 MailboxOutputSurface::TransferableFrame::TransferableFrame(
     uint32_t texture_id,
     const gpu::Mailbox& mailbox,
     const gfx::Size size)
     : texture_id(texture_id), mailbox(mailbox), size(size) {}
 
 }  // namespace content