Remove unused ScreenOrientation code in XRSession

Anything that actually used this code was removed a while ago, but a few
references remained.

Fixed: 840346
Change-Id: Ic5c42dd85dcfa446757a45be8e82a16179080a6f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2233600
Commit-Queue: Alexander Cooper <alcooper@chromium.org>
Commit-Queue: Brandon Jones <bajones@chromium.org>
Auto-Submit: Alexander Cooper <alcooper@chromium.org>
Reviewed-by: Brandon Jones <bajones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#775766}

third_party/blink/renderer/modules/xr/xr_session.cc

@@ -27,7 +27,6 @@
 #include "third_party/blink/renderer/core/resize_observer/resize_observer.h"
 #include "third_party/blink/renderer/core/resize_observer/resize_observer_entry.h"
 #include "third_party/blink/renderer/modules/event_target_modules.h"
-#include "third_party/blink/renderer/modules/screen_orientation/screen_orientation.h"
 #include "third_party/blink/renderer/modules/xr/type_converters.h"
 #include "third_party/blink/renderer/modules/xr/xr_anchor_set.h"
 #include "third_party/blink/renderer/modules/xr/xr_bounded_reference_space.h"
@@ -1711,16 +1710,6 @@ void XRSession::UpdateCanvasDimensions(Element* element) {
   update_views_next_frame_ = true;
   output_width_ = element->OffsetWidth() * devicePixelRatio;
   output_height_ = element->OffsetHeight() * devicePixelRatio;
-  int output_angle = 0;
-
-  // TODO(crbug.com/836948): handle square canvases.
-  // TODO(crbug.com/840346): we should not need to use ScreenOrientation here.
-  ScreenOrientation* orientation = ScreenOrientation::Create(window);
-
-  if (orientation) {
-    output_angle = orientation->angle();
-    DVLOG(2) << __func__ << ": got angle=" << output_angle;
-  }
 
   if (render_state_->baseLayer()) {
     render_state_->baseLayer()->OnResize();

third_party/blink/web_tests/external/wpt/resources/chromium/webxr-test.js

@@ -767,11 +767,6 @@ class MockRuntime extends EventTarget {
     this.dataProviderBinding_.close();
   }
 
-  updateSessionGeometry(frame_size, display_rotation) {
-    // This function must exist to ensure that calls to it do not crash, but we
-    // do not have any use for this data at present.
-  }
-
   // XREnvironmentIntegrationProvider implementation:
   subscribeToHitTest(nativeOriginInformation, entityTypes, ray) {
     if (!this.supportedModes_.includes(device.mojom.XRSessionMode.kImmersiveAr)) {