android: Comment to implement DidSwapBuffers for vulkan

content/browser/renderer_host/compositor_impl_android.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/browser/renderer_host/compositor_impl_android.h"
 
 #include <android/bitmap.h>
 #include <android/native_window_jni.h>
 #include <stdint.h>
 #include <unordered_set>
@@ skipping 618 matching lines @@
 void CompositorImpl::CreateVulkanOutputSurface() {
   if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableVulkan))
     return;
 
   scoped_refptr<cc::VulkanContextProvider> vulkan_context_provider =
       GetSharedVulkanContextProvider();
   if (!vulkan_context_provider)
     return;
 
+  // TODO(crbug.com/582558): Need to match GL and implement DidSwapBuffers.
   auto vulkan_surface = base::MakeUnique<VulkanOutputSurface>(
       vulkan_context_provider, base::ThreadTaskRunnerHandle::Get());
   if (!vulkan_surface->Initialize(window_))
     return;
 
   InitializeDisplay(std::move(vulkan_surface),
                     std::move(vulkan_context_provider), nullptr);
 }
 #endif
 
@@ skipping 171 matching lines @@
   }
   GetSurfaceManager()->UnregisterFrameSinkHierarchy(frame_sink_id_,
                                                     frame_sink_id);
 }
 
 bool CompositorImpl::HavePendingReadbacks() {
   return !readback_layer_tree_->children().empty();
 }
 
 }  // namespace content