Mark corner resize areas as gesture exclusion areas.

Prevent back gesture from triggering when a corner resize is attempted.

Bug: 269661917
Test: Manual, resize desktop mode task to left/right edge of screen,
then attempt to resize again from the edge. Confirm back gesture does
not trigger.

Change-Id: I933b139171fa8049a5c0c98611e8831963236e0e

libs/WindowManager/Shell/src/com/android/wm/shell/windowdecor/DragResizeInputListener.java

@@ -42,6 +42,9 @@ import android.view.WindowManagerGlobal;
 
 import com.android.internal.view.BaseIWindow;
 
+import java.util.Arrays;
+import java.util.List;
+
 /**
  * An input event listener registered to InputDispatcher to receive input events on task edges and
  * and corners. Converts them to drag resize requests.
@@ -211,6 +214,10 @@ class DragResizeInputListener implements AutoCloseable {
                     PRIVATE_FLAG_TRUSTED_OVERLAY,
                     0 /* inputFeatures */,
                     touchRegion);
+            List<Rect> cornersList = Arrays.asList(
+                    mLeftTopCornerBounds, mLeftBottomCornerBounds,
+                    mRightTopCornerBounds, mRightBottomCornerBounds);
+            mWindowSession.reportSystemGestureExclusionChanged(mFakeWindow, cornersList);
         } catch (RemoteException e) {
             e.rethrowFromSystemServer();
         }