Add @Nullable annotation to the parameter of Object.equals() methods.

Those annotations could be inferred by some tools (like Kotlin), but the
https://checkerframework.org/ doesn't check inherited annotations
complaining about all equals() invocations that get nullable argument.

The change was generated by running

find . -name \*.java | xargs sed -i 's/public boolean equals(Object /public boolean equals(@Nullable Object /'

in the frameworks/base directory and by automatically adding and
formatting required imports if needed. No manual edits.

Bug: 170883422
Test: Annotation change only. Should have not impact.
Exempt-From-Owner-Approval: Mechanical change not specific to any component.
Change-Id: I5eedb571c9d78862115dfdc5dae1cf2a35343580

1 files changed, 3 insertions, 3 deletions

diff --git a/core/java/android/view/DisplayCutout.java b/core/java/android/view/DisplayCutout.java
index b4863f9c6dd0..3f2dd4d8f557 100644
--- a/core/java/android/view/DisplayCutout.java
+++ b/core/java/android/view/DisplayCutout.java
@@ -205,7 +205,7 @@ public final class DisplayCutout {
             return result;
         }
         @Override
-        public boolean equals(Object o) {
+        public boolean equals(@Nullable Object o) {
             if (o == this) {
                 return true;
             }
@@ -535,7 +535,7 @@ public final class DisplayCutout {
     }
 
     @Override
-    public boolean equals(Object o) {
+    public boolean equals(@Nullable Object o) {
         if (o == this) {
             return true;
         }
@@ -877,7 +877,7 @@ public final class DisplayCutout {
         }
 
         @Override
-        public boolean equals(Object o) {
+        public boolean equals(@Nullable Object o) {
             return o instanceof ParcelableWrapper
                     && mInner.equals(((ParcelableWrapper) o).mInner);
         }