diff --git a/api/current.txt b/api/current.txt
index 9edc6d3..3029a2a 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -30959,6 +30959,7 @@
     method public boolean hasInsets();
     method public boolean hasSystemWindowInsets();
     method public boolean hasWindowDecorInsets();
+    method public boolean isRound();
   }
 
   public abstract interface WindowManager implements android.view.ViewManager {
diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index ef22def..eec4354 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -1171,6 +1171,11 @@
         m.preTranslate(-attachInfo.mWindowLeft, -attachInfo.mWindowTop);
     }
 
+    void dispatchApplyInsets(View host) {
+        mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets);
+        host.dispatchApplyWindowInsets(new WindowInsets(mFitSystemWindowsInsets));
+    }
+
     private void performTraversals() {
         // cache mView since it is used so much below...
         final View host = mView;
@@ -1257,8 +1262,7 @@
             }
             host.dispatchAttachedToWindow(attachInfo, 0);
             attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true);
-            mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets);
-            host.fitSystemWindows(mFitSystemWindowsInsets);
+            dispatchApplyInsets(host);
             //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn);
 
         } else {
@@ -1383,9 +1387,8 @@
 
         if (mFitSystemWindowsRequested) {
             mFitSystemWindowsRequested = false;
-            mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets);
             mLastOverscanRequested = mAttachInfo.mOverscanRequested;
-            host.fitSystemWindows(mFitSystemWindowsInsets);
+            dispatchApplyInsets(host);
             if (mLayoutRequested) {
                 // Short-circuit catching a new layout request here, so
                 // we don't need to go through two layout passes when things
@@ -1559,8 +1562,7 @@
                     mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility;
                     mLastOverscanRequested = mAttachInfo.mOverscanRequested;
                     mFitSystemWindowsRequested = false;
-                    mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets);
-                    host.fitSystemWindows(mFitSystemWindowsInsets);
+                    dispatchApplyInsets(host);
                 }
                 if (visibleInsetsChanged) {
                     mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets);
diff --git a/core/java/android/view/WindowInsets.java b/core/java/android/view/WindowInsets.java
index cdfcb43..f8cc793 100644
--- a/core/java/android/view/WindowInsets.java
+++ b/core/java/android/view/WindowInsets.java
@@ -33,6 +33,7 @@
     private Rect mSystemWindowInsets;
     private Rect mWindowDecorInsets;
     private Rect mTempRect;
+    private boolean mIsRound;
 
     private static final Rect EMPTY_RECT = new Rect(0, 0, 0, 0);
 
@@ -46,8 +47,14 @@
 
     /** @hide */
     public WindowInsets(Rect systemWindowInsets, Rect windowDecorInsets) {
+        this(systemWindowInsets, windowDecorInsets, false);
+    }
+
+    /** @hide */
+    public WindowInsets(Rect systemWindowInsets, Rect windowDecorInsets, boolean isRound) {
         mSystemWindowInsets = systemWindowInsets;
         mWindowDecorInsets = windowDecorInsets;
+        mIsRound = isRound;
     }
 
     /**
@@ -58,12 +65,12 @@
     public WindowInsets(WindowInsets src) {
         mSystemWindowInsets = src.mSystemWindowInsets;
         mWindowDecorInsets = src.mWindowDecorInsets;
+        mIsRound = src.mIsRound;
     }
 
     /** @hide */
     public WindowInsets(Rect systemWindowInsets) {
-        mSystemWindowInsets = systemWindowInsets;
-        mWindowDecorInsets = EMPTY_RECT;
+        this(systemWindowInsets, EMPTY_RECT);
     }
 
     /**
@@ -220,6 +227,20 @@
         return hasSystemWindowInsets() || hasWindowDecorInsets();
     }
 
+    /**
+     * Returns true if the associated window has a round shape.
+     *
+     * <p>A round window's left, top, right and bottom edges reach all the way to the
+     * associated edges of the window but the corners may not be visible. Views responding
+     * to round insets should take care to not lay out critical elements within the corners
+     * where they may not be accessible.</p>
+     *
+     * @return True if the window is round
+     */
+    public boolean isRound() {
+        return mIsRound;
+    }
+
     public WindowInsets cloneWithSystemWindowInsetsConsumed() {
         final WindowInsets result = new WindowInsets(this);
         result.mSystemWindowInsets = new Rect(0, 0, 0, 0);
@@ -273,6 +294,6 @@
     @Override
     public String toString() {
         return "WindowInsets{systemWindowInsets=" + mSystemWindowInsets + " windowDecorInsets=" +
-                mWindowDecorInsets + "}";
+                mWindowDecorInsets + (isRound() ? "round}" : "}");
     }
 }