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

device/vr/android/gvr/gvr_device.h

 // 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.
 
 #ifndef DEVICE_VR_ANDROID_GVR_DEVICE_H
 #define DEVICE_VR_ANDROID_GVR_DEVICE_H
 
 #include "base/macros.h"
 #include "device/vr/vr_device.h"
 
 namespace device {
 
 class GvrDeviceProvider;
 class GvrDelegate;
 
 class DEVICE_VR_EXPORT GvrDevice : public VRDevice {
  public:
   GvrDevice(GvrDeviceProvider* provider);
   ~GvrDevice() override;
 
   // VRDevice
   void GetVRDevice(
       const base::Callback<void(mojom::VRDisplayInfoPtr)>& callback) override;
   void ResetPose() override;
 
-  void RequestPresent(const base::Callback<void(bool)>& callback) override;
+  void RequestPresent(mojom::VRSubmitFrameClientPtr submit_client,
+                      const base::Callback<void(bool)>& callback) override;
   void SetSecureOrigin(bool secure_origin) override;
   void ExitPresent() override;
 
-  void SubmitFrame(mojom::VRPosePtr pose) override;
+  void SubmitFrame(int16_t frame_index,
+                   const gpu::MailboxHolder& mailbox) override;
   void UpdateLayerBounds(int16_t frame_index,
                          mojom::VRLayerBoundsPtr left_bounds,
-                         mojom::VRLayerBoundsPtr right_bounds) override;
+                         mojom::VRLayerBoundsPtr right_bounds,
+                         int16_t source_width,
+                         int16_t source_height) override;
   void GetVRVSyncProvider(mojom::VRVSyncProviderRequest request) override;
   void OnDelegateChanged();
 
  private:
   GvrDelegate* GetGvrDelegate();
 
   GvrDeviceProvider* gvr_provider_;
   bool secure_origin_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(GvrDevice);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_VR_ANDROID_GVR_DEVICE_H