Re-land^2 WebVR compositor bypass via BrowserMain context + mailbox

device/vr/vr_display_impl.cc

 // Copyright 2016 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 <utility>
 
 #include "base/bind.h"
 #include "device/vr/vr_device.h"
 #include "device/vr/vr_service_impl.h"
 
@@ skipping 23 matching lines @@
 }
 
 void VRDisplayImpl::ResetPose() {
   if (!device_->IsAccessAllowed(this))
     return;
 
   device_->ResetPose();
 }
 
 void VRDisplayImpl::RequestPresent(bool secure_origin,
+                                   mojom::VRSubmitFrameClientPtr submit_client,
                                    const RequestPresentCallback& callback) {
   if (!device_->IsAccessAllowed(this)) {
     callback.Run(false);
     return;
   }
 
-  device_->RequestPresent(base::Bind(&VRDisplayImpl::RequestPresentResult,
-                                     weak_ptr_factory_.GetWeakPtr(), callback,
-                                     secure_origin));
+  device_->RequestPresent(
+      std::move(submit_client),
+      base::Bind(&VRDisplayImpl::RequestPresentResult,
+                 weak_ptr_factory_.GetWeakPtr(), callback, secure_origin));
 }
 
 void VRDisplayImpl::RequestPresentResult(const RequestPresentCallback& callback,
                                          bool secure_origin,
                                          bool success) {
   if (success) {
     device_->SetPresentingDisplay(this);
     device_->SetSecureOrigin(secure_origin);
   }
   callback.Run(success);
 }
 
 void VRDisplayImpl::ExitPresent() {
   if (device_->CheckPresentingDisplay(this))
     device_->ExitPresent();
 }
 
-void VRDisplayImpl::SubmitFrame(mojom::VRPosePtr pose) {
+void VRDisplayImpl::SubmitFrame(int16_t frame_index,
+                                const gpu::MailboxHolder& mailbox) {
   if (!device_->CheckPresentingDisplay(this))
     return;
-  device_->SubmitFrame(std::move(pose));
+  device_->SubmitFrame(frame_index, mailbox);
 }
 
 void VRDisplayImpl::UpdateLayerBounds(int16_t frame_index,
                                       mojom::VRLayerBoundsPtr left_bounds,
-                                      mojom::VRLayerBoundsPtr right_bounds) {
+                                      mojom::VRLayerBoundsPtr right_bounds,
+                                      int16_t source_width,
+                                      int16_t source_height) {
   if (!device_->IsAccessAllowed(this))
     return;
 
   device_->UpdateLayerBounds(frame_index, std::move(left_bounds),
-                             std::move(right_bounds));
+                             std::move(right_bounds), source_width,
+                             source_height);
 }
 
 void VRDisplayImpl::GetVRVSyncProvider(mojom::VRVSyncProviderRequest request) {
   if (!device_->IsAccessAllowed(this)) {
     return;
   }
   device_->GetVRVSyncProvider(std::move(request));
 }
 }