Merge "Use reference equality for AnimatableScaleMatrix equals()." into rvc-dev am: e948137a18 am: 5ebc819640 am: 0b3f8d53fe am: fe5f2a7be4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11975965

Change-Id: I81c7c26c1b36d6faff8218c91ad9dcafbe9456d4

packages/SystemUI/src/com/android/systemui/bubbles/animation/AnimatableScaleMatrix.java

@@ -134,4 +134,11 @@ public class AnimatableScaleMatrix extends Matrix {
     public float getPivotY() {
         return mPivotY;
     }
+
+    @Override
+    public boolean equals(Object obj) {
+        // Use object equality to allow this matrix to be used as a map key (which is required for
+        // PhysicsAnimator's animator caching).
+        return obj == this;
+    }
 }