WebVR compositor bypass via BrowserMain context + mailbox

device/vr/android/gvr/gvr_device.cc

Index: device/vr/android/gvr/gvr_device.cc
diff --git a/device/vr/android/gvr/gvr_device.cc b/device/vr/android/gvr/gvr_device.cc
index f0a86e2fd9a94fb14ecff45c05a1d120fa63521a..82d615eb571c9a63ac71409be2078b0787af50c6 100644
--- a/device/vr/android/gvr/gvr_device.cc
+++ b/device/vr/android/gvr/gvr_device.cc
@@ -56,15 +56,20 @@ void GvrDevice::ExitPresent() {
   OnExitPresent();
 }
 
-void GvrDevice::SubmitFrame(mojom::VRPosePtr pose) {
+void GvrDevice::SubmitFrame(int16_t frame_index,
+                            const gpu::MailboxHolder& mailbox,
+                            mojom::VRSubmitFrameClientPtr submit_client) {
   GvrDelegate* delegate = GetGvrDelegate();
-  if (delegate)
-    delegate->SubmitWebVRFrame();
+  if (delegate) {
+    delegate->SubmitWebVRFrame(frame_index, mailbox, std::move(submit_client));
+  }
 }
 
 void GvrDevice::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) {
   GvrDelegate* delegate = GetGvrDelegate();
   if (!delegate)
     return;
@@ -81,8 +86,9 @@ void GvrDevice::UpdateLayerBounds(int16_t frame_index,
   right_gvr_bounds.right = right_bounds->left + right_bounds->width;
   right_gvr_bounds.bottom = 1.0f - (right_bounds->top + right_bounds->height);
 
+  gvr::Sizei source_size = {source_width, source_height};
   delegate->UpdateWebVRTextureBounds(frame_index, left_gvr_bounds,
-                                     right_gvr_bounds);
+                                     right_gvr_bounds, source_size);
 }
 
 void GvrDevice::GetVRVSyncProvider(mojom::VRVSyncProviderRequest request) {