diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index db80aed0281ce..bac7fac71f463 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -1153,7 +1153,15 @@ public final class ViewRootImpl implements ViewParent,
 
     void dispatchApplyInsets(View host) {
         mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets);
-        host.dispatchApplyWindowInsets(new WindowInsets(mFitSystemWindowsInsets));
+        boolean isRound = false;
+        if ((mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0
+                && mDisplay.getDisplayId() == 0) {
+            // we're fullscreen and not hosted in an ActivityView
+            isRound = mContext.getResources().getBoolean(
+                    com.android.internal.R.bool.config_windowIsRound);
+        }
+        host.dispatchApplyWindowInsets(new WindowInsets(
+                mFitSystemWindowsInsets, isRound));
     }
 
     private void performTraversals() {
diff --git a/core/java/android/view/WindowInsets.java b/core/java/android/view/WindowInsets.java
index f8cc793f477b6..2160efeadc0e0 100644
--- a/core/java/android/view/WindowInsets.java
+++ b/core/java/android/view/WindowInsets.java
@@ -50,6 +50,11 @@ public class WindowInsets {
         this(systemWindowInsets, windowDecorInsets, false);
     }
 
+    /** @hide */
+    public WindowInsets(Rect systemWindowInsets, boolean isRound) {
+        this(systemWindowInsets, EMPTY_RECT, isRound);
+    }
+
     /** @hide */
     public WindowInsets(Rect systemWindowInsets, Rect windowDecorInsets, boolean isRound) {
         mSystemWindowInsets = systemWindowInsets;
diff --git a/core/res/res/values/config.xml b/core/res/res/values/config.xml
index d6395d649229a..bc60608047859 100644
--- a/core/res/res/values/config.xml
+++ b/core/res/res/values/config.xml
@@ -1417,4 +1417,7 @@
          2 - The device DOES NOT have a permanent menu key; ignore autodetection. -->
     <integer name="config_overrideHasPermanentMenuKey">0</integer>
 
+    <!-- default window inset isRound property -->
+    <bool name="config_windowIsRound">false</bool>
+
 </resources>
diff --git a/core/res/res/values/symbols.xml b/core/res/res/values/symbols.xml
index e7dfec4571951..aa8db0134759d 100644
--- a/core/res/res/values/symbols.xml
+++ b/core/res/res/values/symbols.xml
@@ -288,6 +288,7 @@
   <java-symbol type="bool" name="config_useFixedVolume" />
   <java-symbol type="bool" name="config_forceDefaultOrientation" />
   <java-symbol type="bool" name="config_wifi_batched_scan_supported" />
+  <java-symbol type="bool" name="config_windowIsRound" />
 
   <java-symbol type="integer" name="config_cursorWindowSize" />
   <java-symbol type="integer" name="config_extraFreeKbytesAdjust" />