Update webxr-test-api method names to floorOrigin

Per feedback on the spec and updates to the comments about what an
origin actually is, the API method names and dictionary values were
updated from localToFloorTransform to the more accurate floorOrigin. The
current usage of these items actually matches the new name and therefore
were previously improperly named.

Bug: 979316
Change-Id: I9deedf9cf25e804135251b8e20a30d89f0eb6276
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1700176
Commit-Queue: Alexander Cooper <alcooper@chromium.org>
Commit-Queue: Bill Orr <billorr@chromium.org>
Auto-Submit: Alexander Cooper <alcooper@chromium.org>
Reviewed-by: Bill Orr <billorr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#677129}

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

@@ -226,8 +226,8 @@ class MockRuntime {
       this.setViewerOrigin(fakeDeviceInit.viewerOrigin);
     }
 
-    if (fakeDeviceInit.localToFloorLevelTransform != null) {
-      this.setLocalToFloorLevelTransform(fakeDeviceInit.localToFloorLevelTransform);
+    if (fakeDeviceInit.floorOrigin != null) {
+      this.setFloorOrigin(fakeDeviceInit.floorOrigin);
     }
 
     // This appropriately handles if the coordinates are null
@@ -312,7 +312,7 @@ class MockRuntime {
     }
   }
 
-  setLocalToFloorLevelTransform(transform) {
+  setFloorOrigin(floorOrigin) {
     if (!this.displayInfo_.stageParameters) {
       this.displayInfo_.stageParameters = default_stage_parameters;
       this.displayInfo_.stageParameters.bounds = this.bounds_;
@@ -320,14 +320,14 @@ class MockRuntime {
 
     this.displayInfo_.stageParameters.standingTransform = new gfx.mojom.Transform();
     this.displayInfo_.stageParameters.standingTransform.matrix =
-      getMatrixFromTransform(transform);
+      getMatrixFromTransform(floorOrigin);
 
     if (this.sessionClient_.ptr.isBound()) {
       this.sessionClient_.onChanged(this.displayInfo_);
     }
   }
 
-  clearLocalToFloorLevelTransform() {
+  clearFloorOrigin() {
     if (this.displayInfo_.stageParameters) {
       this.displayInfo_.stageParameters = null;
 

third_party/blink/web_tests/external/wpt/webxr/resources/webxr_test_constants.js

@@ -55,12 +55,12 @@ const VALID_GRIP_WITH_POINTER_OFFSET =
 
 // A Valid Local to floor matrix/transform for when we don't care about specific
 // values.  Note that these should be identical, just different representations.
-const VALID_LOCAL_TO_FLOOR_MATRIX = [1, 0,    0,  0,
+const VALID_FLOOR_ORIGIN_MATRIX = [1, 0,    0,  0,
                                      0, 1,    0,  0,
                                      0, 0,    1,  0,
                                      1, 1.65, -1, 1];
 
-const VALID_LOCAL_TO_FLOOR_TRANSFORM = {
+const VALID_FLOOR_ORIGIN = {
     position: [1.0, 1.65, -1.0],
     orientation: [0, 0, 0, 1]
 };

third_party/blink/web_tests/external/wpt/webxr/xrBoundedReferenceSpace_updates.https.html

@@ -14,7 +14,7 @@ let fakeDeviceInitParams = {
     supportsImmersive: true,
     views: VALID_VIEWS,
     viewerOrigin: IDENTITY_TRANSFORM,
-    localToFloorLevelTransform: VALID_LOCAL_TO_FLOOR_TRANSFORM
+    floorOrigin: VALID_FLOOR_ORIGIN
 };
 
 let testFunction = function(session, fakeDeviceController, t) {

third_party/blink/web_tests/external/wpt/webxr/xrStationaryReferenceSpace_floorlevel_updates.https.html

@@ -32,7 +32,7 @@ let testFunction = function(session, fakeDeviceController, t) {
           assert_greater_than(poseMatrix[13], 1.0);
           assert_approx_equals(poseMatrix[14], 0.0, FLOAT_EPSILON);
 
-          fakeDeviceController.setLocalToFloorLevelTransform(VALID_LOCAL_TO_FLOOR_TRANSFORM);
+          fakeDeviceController.setFloorOrigin(VALID_FLOOR_ORIGIN);
 
           // Need to request one animation frame for the new stage transform to
           // propagate before we check that it's what we expect.
@@ -49,7 +49,7 @@ let testFunction = function(session, fakeDeviceController, t) {
           assert_not_equals(pose, null);
 
           let poseMatrix = pose.transform.matrix;
-          assert_matrix_approx_equals(poseMatrix, VALID_LOCAL_TO_FLOOR_MATRIX, FLOAT_EPSILON);
+          assert_matrix_approx_equals(poseMatrix, VALID_FLOOR_ORIGIN_MATRIX, FLOAT_EPSILON);
         });
 
         // Finished.

third_party/blink/web_tests/xr/xrBoundedReferenceSpace_updates.html

@@ -17,7 +17,7 @@ let fakeDeviceInitParams = {
     supportsImmersive: true,
     views: VALID_VIEWS,
     viewerOrigin: IDENTITY_TRANSFORM,
-    localToFloorLevelTransform: VALID_LOCAL_TO_FLOOR_TRANSFORM
+    floorOrigin: VALID_FLOOR_ORIGIN
 };
 
 let requestSessionModes = [
@@ -48,7 +48,7 @@ let testFunction = function(session, t, fakeDeviceController) {
               assert_not_equals(pose, null);
 
               let poseMatrix = pose.transform.matrix;
-              assert_matrices_approx_equal(poseMatrix, VALID_LOCAL_TO_FLOOR_MATRIX);
+              assert_matrices_approx_equal(poseMatrix, VALID_FLOOR_ORIGIN_MATRIX);
 
               // If an explicit array of bounds points was not provided then the
               // bounds geometry should represent the four corners of the rectangle

third_party/blink/web_tests/xr/xrReferenceSpace_originOffsetBounded.html

@@ -40,7 +40,7 @@ const fakeDeviceInitParams = {
   supportsImmersive: true,
   views: VIEWS_WITH_OFFSET,
   viewerOrigin: IDENTITY_TRANSFORM,
-  localToFloorLevelTransform: FLOOR_TRANSFORM,
+  floorOrigin: FLOOR_TRANSFORM,
   boundsCoordinates: [
     { x:  1, z: -1.5 },
     { x:  1, z:  1.5 },