diff --git a/api/current.txt b/api/current.txt
index 3029a2a..9edc6d3 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -30959,7 +30959,6 @@
     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 eec4354..ef22def 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -1171,11 +1171,6 @@
         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;
@@ -1262,7 +1257,8 @@
             }
             host.dispatchAttachedToWindow(attachInfo, 0);
             attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true);
-            dispatchApplyInsets(host);
+            mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets);
+            host.fitSystemWindows(mFitSystemWindowsInsets);
             //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn);
 
         } else {
@@ -1387,8 +1383,9 @@
 
         if (mFitSystemWindowsRequested) {
             mFitSystemWindowsRequested = false;
+            mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets);
             mLastOverscanRequested = mAttachInfo.mOverscanRequested;
-            dispatchApplyInsets(host);
+            host.fitSystemWindows(mFitSystemWindowsInsets);
             if (mLayoutRequested) {
                 // Short-circuit catching a new layout request here, so
                 // we don't need to go through two layout passes when things
@@ -1562,7 +1559,8 @@
                     mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility;
                     mLastOverscanRequested = mAttachInfo.mOverscanRequested;
                     mFitSystemWindowsRequested = false;
-                    dispatchApplyInsets(host);
+                    mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets);
+                    host.fitSystemWindows(mFitSystemWindowsInsets);
                 }
                 if (visibleInsetsChanged) {
                     mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets);
diff --git a/core/java/android/view/WindowInsets.java b/core/java/android/view/WindowInsets.java
index f8cc793..cdfcb43 100644
--- a/core/java/android/view/WindowInsets.java
+++ b/core/java/android/view/WindowInsets.java
@@ -33,7 +33,6 @@
     private Rect mSystemWindowInsets;
     private Rect mWindowDecorInsets;
     private Rect mTempRect;
-    private boolean mIsRound;
 
     private static final Rect EMPTY_RECT = new Rect(0, 0, 0, 0);
 
@@ -47,14 +46,8 @@
 
     /** @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;
     }
 
     /**
@@ -65,12 +58,12 @@
     public WindowInsets(WindowInsets src) {
         mSystemWindowInsets = src.mSystemWindowInsets;
         mWindowDecorInsets = src.mWindowDecorInsets;
-        mIsRound = src.mIsRound;
     }
 
     /** @hide */
     public WindowInsets(Rect systemWindowInsets) {
-        this(systemWindowInsets, EMPTY_RECT);
+        mSystemWindowInsets = systemWindowInsets;
+        mWindowDecorInsets = EMPTY_RECT;
     }
 
     /**
@@ -227,20 +220,6 @@
         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);
@@ -294,6 +273,6 @@
     @Override
     public String toString() {
         return "WindowInsets{systemWindowInsets=" + mSystemWindowInsets + " windowDecorInsets=" +
-                mWindowDecorInsets + (isRound() ? "round}" : "}");
+                mWindowDecorInsets + "}";
     }
 }