Revert of Mustash: Ensure surfaces submitted to Mus by WM and embedders contain Surfaces with embeded content.

ui/aura/mus/client_surface_embedder.cc

-// Copyright 2017 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 "ui/aura/mus/client_surface_embedder.h"
-
-#include "cc/surfaces/surface_reference_factory.h"
-#include "ui/aura/mus/surface_id_handler.h"
-#include "ui/aura/window.h"
-
-namespace aura {
-namespace {
-
-// TODO(mfomitchev, samans): Remove these stub classes once the SurfaceReference
-// work is complete.
-class StubSurfaceReference : public cc::SurfaceReferenceBase {
- public:
-  StubSurfaceReference(scoped_refptr<const cc::SurfaceReferenceFactory> factory)
-      : cc::SurfaceReferenceBase(factory) {}
-
-  ~StubSurfaceReference() override { Destroy(); }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(StubSurfaceReference);
-};
-
-class StubSurfaceReferenceFactory : public cc::SurfaceReferenceFactory {
- public:
-  StubSurfaceReferenceFactory() = default;
-
-  // cc::SurfaceReferenceFactory:
-  std::unique_ptr<cc::SurfaceReferenceBase> CreateReference(
-      cc::SurfaceReferenceOwner* owner,
-      const cc::SurfaceId& surface_id) const override {
-    return base::MakeUnique<StubSurfaceReference>(make_scoped_refptr(this));
-  }
-
- protected:
-  ~StubSurfaceReferenceFactory() override = default;
-
- private:
-  // cc::SurfaceReferenceFactory:
-  void DestroyReference(cc::SurfaceReferenceBase* surface_ref) const override {}
-
-  DISALLOW_COPY_AND_ASSIGN(StubSurfaceReferenceFactory);
-};
-}  // namespace
-
-ClientSurfaceEmbedder::ClientSurfaceEmbedder(Window* window) : window_(window) {
-  surface_layer_ = base::MakeUnique<ui::Layer>(ui::LAYER_TEXTURED);
-  surface_layer_->SetVisible(true);
-  // The frame provided by the parent window->layer() needs to show through
-  // the surface layer.
-  surface_layer_->SetFillsBoundsOpaquely(false);
-
-  clip_layer_ = base::MakeUnique<ui::Layer>(ui::LAYER_NOT_DRAWN);
-  clip_layer_->SetFillsBoundsOpaquely(false);
-
-  clip_layer_->Add(surface_layer_.get());
-  window_->layer()->Add(clip_layer_.get());
-
-  // Window's layer may contain content from this client (the embedder), e.g.
-  // this is the case with window decorations provided by Window Manager.
-  // This content should appear underneath the content of the embedded client.
-  window_->layer()->StackAtTop(clip_layer_.get());
-
-  // We can't set this on window's layer, because that would clip the window
-  // shadow.
-  clip_layer_->SetMasksToBounds(true);
-}
-
-ClientSurfaceEmbedder::~ClientSurfaceEmbedder() = default;
-
-void ClientSurfaceEmbedder::UpdateSurface(const cc::SurfaceInfo& surface_info) {
-  // TODO(mfomitchev): Currently the frame size may not match the window size.
-  // In the future the surface id will be created by Ash (and used with the
-  // surface layer) when the window resize happens, which will ensure that the
-  // surface size matches the window size (unless a timeout occurs).
-  gfx::Size frame_size = surface_info.size_in_pixels();
-  surface_layer_->SetBounds(
-      gfx::Rect(0, 0, frame_size.width(), frame_size.height()));
-  // Clip to window bounds.
-  clip_layer_->SetBounds(
-      gfx::Rect(0, 0, window_->bounds().width(), window_->bounds().height()));
-
-  surface_layer_->SetShowSurface(
-      surface_info, make_scoped_refptr(new StubSurfaceReferenceFactory));
-}
-
-}  // namespace aura