Revert "Update emulated position on each XRFrame"

This reverts commit 8be89ae08126913ff4447927ac5a087b8d6babcf.

Reason for revert: Build failure:

https://ci.chromium.org/p/chromium/builders/ci/Win%20x64%20Builder/79827
[4142/15096] CXX obj/device/vr/vr/openxr_controller.obj
FAILED: obj/device/vr/vr/openxr_controller.obj
C:\b\s\w\ir\cache\goma\client\gomacc.exe ..\..\third_party\llvm-build\Release+Asserts\bin\clang-cl.e...(too long)
../../device/vr/openxr/openxr_controller.cc(204,19): error: no member named 'emulated_position' in 'device::mojom::XRInputSourceDescription'
description_->emulated_position = false;
~~~~~~~~~~~~  ^
1 error generated.

Original change's description:
> Update emulated position on each XRFrame
>
> For both the head poses and input poses, send this value through mojo
> from the device process to the renderer process on every frame.
>
> Bug: 969131
> Change-Id: Ie895deb75bddb6dd883d09828cfcb30f335d3793
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1825478
> Auto-Submit: Jacob DeWitt <jacde@chromium.org>
> Commit-Queue: Will Harris <wfh@chromium.org>
> Reviewed-by: Will Harris <wfh@chromium.org>
> Reviewed-by: Klaus Weidner <klausw@chromium.org>
> Reviewed-by: Alexander Cooper <alcooper@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#701389}

TBR=dcheng@chromium.org,wfh@chromium.org,klausw@chromium.org,jacde@chromium.org,alcooper@chromium.org

Change-Id: I91ec66842b8f0a14bcb85145843fb4d617847066
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 969131
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1833005
Reviewed-by: Tsuyoshi Horo <horo@chromium.org>
Commit-Queue: Tsuyoshi Horo <horo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#701401}
diff --git a/resources/chromium/webxr-test.js b/resources/chromium/webxr-test.js
index b564ec2..eae4d64 100644
--- a/resources/chromium/webxr-test.js
+++ b/resources/chromium/webxr-test.js
@@ -268,7 +268,6 @@
     this.pose_ = {
       orientation: { x: q[0], y: q[1], z: q[2], w: q[3] },
       position: { x: p[0], y: p[1], z: p[2] },
-      emulatedPosition: emulatedPosition,
       angularVelocity: null,
       linearVelocity: null,
       angularAcceleration: null,
@@ -692,7 +691,6 @@
     this.desc_dirty_ = true;
     this.pointer_offset_ = new gfx.mojom.Transform();
     this.pointer_offset_.matrix = getMatrixFromTransform(transform);
-    this.emulated_position_ = emulatedPosition;
   }
 
   disconnect() {
@@ -814,11 +812,11 @@
 
     input_state.gamepad = this.gamepad_;
 
-    input_state.emulatedPosition = this.emulated_position_;
-
     if (this.desc_dirty_) {
       let input_desc = new device.mojom.XRInputSourceDescription();
 
+      input_desc.emulatedPosition = this.emulated_position_;
+
       switch (this.target_ray_mode_) {
         case 'gaze':
           input_desc.targetRayMode = device.mojom.XRTargetRayMode.GAZING;
diff --git a/webxr/getViewerPose_emulatedPosition.https.html b/webxr/getViewerPose_emulatedPosition.https.html
deleted file mode 100644
index 201a9b7..0000000
--- a/webxr/getViewerPose_emulatedPosition.https.html
+++ /dev/null
@@ -1,51 +0,0 @@
-<!DOCTYPE html>
-<body>
-  <script src=/resources/testharness.js></script>
-  <script src=/resources/testharnessreport.js></script>
-  <script src="resources/webxr_util.js"></script>
-  <script src="resources/webxr_test_constants.js"></script>
-  <canvas></canvas>
-
-  <script>
-
-    let testName = "XRFrame getViewerPose has emulatedPosition set properly.";
-
-    const poseTransform = {
-        position: [1, 1, 1],
-        orientation: [0.5, 0.5, 0.5, 0.5]
-    };
-
-    let testFunction = function(session, fakeDeviceController, t) {
-      return session.requestReferenceSpace('local')
-        .then((referenceSpace) => new Promise((resolve, reject) => {
-          function CheckPositionNotEmulated(time, vrFrame){
-            t.step(() => {
-              let pose = vrFrame.getViewerPose(referenceSpace);
-              assert_not_equals(pose, null);
-              assert_equals(pose.emulatedPosition, false);
-              fakeDeviceController.setViewerOrigin(poseTransform, true);
-            });
-
-            session.requestAnimationFrame(CheckPositionEmulated);
-          }
-
-          function CheckPositionEmulated(time, vrFrame) {
-            t.step(() => {
-              let pose = vrFrame.getViewerPose(referenceSpace);
-              assert_not_equals(pose, null);
-              assert_equals(pose.emulatedPosition, true);
-            });
-
-            // Finished.
-            resolve();
-          }
-
-          session.requestAnimationFrame(CheckPositionNotEmulated);
-        }));
-    };
-
-    xr_session_promise_test(testName, testFunction,
-      TRACKED_IMMERSIVE_DEVICE, 'immersive-vr');
-
-  </script>
-</body>
diff --git a/webxr/xrInputSource_emulatedPosition.https.html b/webxr/xrInputSource_emulatedPosition.https.html
deleted file mode 100644
index 7b0fda4..0000000
--- a/webxr/xrInputSource_emulatedPosition.https.html
+++ /dev/null
@@ -1,63 +0,0 @@
-<!DOCTYPE html>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script src="resources/webxr_util.js"></script>
-<script src="resources/webxr_test_constants.js"></script>
-<script src="resources/webxr_test_asserts.js"></script>
-<canvas id="webgl-canvas"></canvas>
-
-<script>
-
-let testName = "Poses from XRInputSource.gripSpace have emulatedPosition set "
-  + "properly";
-
-let fakeDeviceInitParams = TRACKED_IMMERSIVE_DEVICE;
-
-let testFunction =
-  (session, fakeDeviceController, t) => new Promise((resolve) => {
-    let input_source = fakeDeviceController.simulateInputSourceConnection({
-      handedness: "right",
-      targetRayMode: "tracked-pointer",
-      pointerOrigin: IDENTITY_TRANSFORM,
-      gripOrigin: VALID_GRIP_TRANSFORM,
-      profiles: []
-    });
-
-    // Must have a reference space to get input poses. eye-level doesn't apply
-    // any transforms to the given matrix.
-    session.requestReferenceSpace('local').then( (referenceSpace) => {
-
-      function CheckPositionNotEmulated(time, xrFrame) {
-        let source = session.inputSources[0];
-        let grip_pose = xrFrame.getPose(source.gripSpace, referenceSpace);
-
-        t.step(() => {
-          assert_not_equals(grip_pose, null);
-          assert_equals(grip_pose.emulatedPosition, false);
-        });
-
-        input_source.setGripOrigin(VALID_GRIP_TRANSFORM, true);
-        session.requestAnimationFrame(CheckPositionEmulated);
-      }
-
-      function CheckPositionEmulated(time, xrFrame) {
-        let source = session.inputSources[0];
-        let grip_pose = xrFrame.getPose(source.gripSpace, referenceSpace);
-
-        t.step(() => {
-          assert_not_equals(grip_pose, null);
-          assert_equals(grip_pose.emulatedPosition, true);
-        });
-
-        resolve();
-      }
-
-      // Can only request input poses in an xr frame.
-      session.requestAnimationFrame(CheckPositionNotEmulated);
-    });
-  });
-
-xr_session_promise_test(
-  testName, testFunction, fakeDeviceInitParams, 'immersive-vr');
-
-</script>