Revert of WebVR compositor bypass via BrowserMain context + mailbox

device/vr/test/fake_vr_device.cc

Index: device/vr/test/fake_vr_device.cc
diff --git a/device/vr/test/fake_vr_device.cc b/device/vr/test/fake_vr_device.cc
index 9595e5ffbd270b9bebc8ecbfb8f4be9460a3087d..c699905019dff22bee1b1b63e2c6d2f13e57e77e 100644
--- a/device/vr/test/fake_vr_device.cc
+++ b/device/vr/test/fake_vr_device.cc
@@ -62,8 +62,7 @@
 
 void FakeVRDevice::ResetPose() {}
 
-void FakeVRDevice::RequestPresent(mojom::VRSubmitFrameClientPtr submit_client,
-                                  const base::Callback<void(bool)>& callback) {
+void FakeVRDevice::RequestPresent(const base::Callback<void(bool)>& callback) {
   callback.Run(true);
 }
 
@@ -73,14 +72,11 @@
   OnExitPresent();
 }
 
-void FakeVRDevice::SubmitFrame(int16_t frame_index,
-                               const gpu::MailboxHolder& mailbox) {}
+void FakeVRDevice::SubmitFrame(mojom::VRPosePtr pose) {}
 
 void FakeVRDevice::UpdateLayerBounds(int16_t frame_index,
                                      mojom::VRLayerBoundsPtr leftBounds,
-                                     mojom::VRLayerBoundsPtr rightBounds,
-                                     int16_t source_width,
-                                     int16_t source_height) {}
+                                     mojom::VRLayerBoundsPtr rightBounds) {}
 
 void FakeVRDevice::GetVRVSyncProvider(mojom::VRVSyncProviderRequest request) {}