[XR] Tab tearing is enabled in the multi-modal aimimg input.

Test: Manually verified on Moohan. Recording is https://drive.google.com/file/d/10-PuQg45eL3fQUSHwzA534MjilwZB2Fz/view?usp=drive_link&resourcekey=0-XiVtwzedlbkXCXIIPC_ovw.

Bug: 396459019
Change-Id: I7f5666e35841acd13b5e1fb9f4c390282d16fba2
Fixed: 396459019
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6508406
Reviewed-by: Sirisha Kavuluru <skavuluru@google.com>
Reviewed-by: Wenyu Fu <wenyufu@chromium.org>
Commit-Queue: Wenyu Fu <wenyufu@chromium.org>
Auto-Submit: Gurmeet Kalra <gurmeetk@google.com>
Cr-Commit-Position: refs/heads/main@{#1455088}

ui/android/java/src/org/chromium/ui/dragdrop/DragAndDropDelegateImpl.java

@@ -42,6 +42,7 @@ import org.chromium.ui.base.MimeTypeUtils;
 import org.chromium.ui.dragdrop.AnimatedImageDragShadowBuilder.CursorOffset;
 import org.chromium.ui.dragdrop.AnimatedImageDragShadowBuilder.DragShadowSpec;
 import org.chromium.ui.dragdrop.DragDropMetricUtils.UrlIntentSource;
+import org.chromium.ui.util.XrUtils;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
@@ -149,8 +150,11 @@ public class DragAndDropDelegateImpl implements DragAndDropDelegate, DragStateTr
     private static boolean isA11yStateEnabled() {
         // Drag and drop is disabled when gesture related a11y service is enabled.
         // See https://crbug.com/1250067.
+        // On XR devices, gesture control is always enabled. Therefore, to verify accessibility
+        // (A11y) status on these devices for drag and drop functionalities, we examine the
+        // `isTouchExplorationEnabled` state, effectively limiting our check to this condition.
         return AccessibilityState.isTouchExplorationEnabled()
-                || AccessibilityState.isPerformGesturesEnabled();
+                || (AccessibilityState.isPerformGesturesEnabled() && !XrUtils.isXrDevice());
     }
 
     private boolean startDragAndDropInternal(

ui/android/junit/src/org/chromium/ui/dragdrop/DragAndDropDelegateImplUnitTest.java

@@ -46,6 +46,7 @@ import org.chromium.base.metrics.RecordHistogram;
 import org.chromium.base.test.BaseRobolectricTestRunner;
 import org.chromium.ui.accessibility.AccessibilityState;
 import org.chromium.ui.dragdrop.DragAndDropDelegateImpl.DragTargetType;
+import org.chromium.ui.util.XrUtils;
 import org.chromium.url.JUnitTestGURLs;
 
 /** Unit tests for {@link DragAndDropDelegateImpl}. */
@@ -645,6 +646,55 @@ public class DragAndDropDelegateImplUnitTest {
         verify(mDragAndDropPermissions).release();
     }
 
+    @Test
+    public void testStartDragAndDrop_WithAndWithoutGesturesEnabled_SupportedOnXrDevice() {
+        XrUtils.setXrDeviceForTesting(true);
+        final Bitmap shadowImage = Bitmap.createBitmap(1, 1, Bitmap.Config.ALPHA_8);
+        final DropDataAndroid dropData = DropDataAndroid.create("text", null, null, null, null);
+
+        // A11y default setting with isTouchExplorationEnabled=false and
+        // isPerformGesturesEnabled=true on XR
+        AccessibilityState.setIsTouchExplorationEnabledForTesting(false);
+        AccessibilityState.setIsPerformGesturesEnabledForTesting(true);
+        Assert.assertTrue(
+                "Drag and drop should start.", calllStartDragAndDrop(shadowImage, dropData));
+
+        // A11y setting with isTouchExplorationEnabled=true and isPerformGesturesEnabled=false on XR
+        AccessibilityState.setIsTouchExplorationEnabledForTesting(true);
+        AccessibilityState.setIsPerformGesturesEnabledForTesting(false);
+        Assert.assertFalse(
+                "Drag and drop should not start when isTouchExplorationEnabled=true.",
+                calllStartDragAndDrop(shadowImage, dropData));
+
+        // A11y setting with isTouchExplorationEnabled=true and isPerformGesturesEnabled=true on XR
+        AccessibilityState.setIsTouchExplorationEnabledForTesting(true);
+        AccessibilityState.setIsPerformGesturesEnabledForTesting(true);
+        Assert.assertFalse(
+                "Drag and drop should not start when isTouchExplorationEnabled=true.",
+                calllStartDragAndDrop(shadowImage, dropData));
+
+        // A11y setting with isTouchExplorationEnabled=false and isPerformGesturesEnabled=false on
+        // XR
+        AccessibilityState.setIsTouchExplorationEnabledForTesting(false);
+        AccessibilityState.setIsPerformGesturesEnabledForTesting(false);
+        Assert.assertTrue(
+                "Drag and drop should start.", calllStartDragAndDrop(shadowImage, dropData));
+
+        XrUtils.resetXrDeviceForTesting();
+    }
+
+    private boolean calllStartDragAndDrop(Bitmap shadowImage, DropDataAndroid dropData) {
+        return mDragAndDropDelegateImpl.startDragAndDrop(
+                mContainerView,
+                shadowImage,
+                dropData,
+                mContainerView.getContext(),
+                /* cursorOffsetX= */ 0,
+                /* cursorOffsetY= */ 0,
+                /* dragObjRectWidth= */ 100,
+                /* dragObjRectHeight= */ 200);
+    }
+
     private DragEvent mockDragEvent(int action) {
         DragEvent event = Mockito.mock(DragEvent.class);
         when(event.getX()).thenReturn(DRAG_START_X_DP);