From 38b48debc575cacdb05e057fc84479d3db2f72d8 Mon Sep 17 00:00:00 2001
From: Colin Cross <ccross@android.com>
Date: Tue, 26 Mar 2019 09:48:28 -0700
Subject: [PATCH] Understand the support library/androidx @Keep annotations

Copied from tools/base/build-system/gradle-core/src/main/resources/com/android/build/gradle/proguard-common.txt.

Fixes: 129311848
Test: none
Change-Id: Ie8b40b416c8772a550bb4d1f7bd6e7e944cdd166
---
 core/proguard.flags | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/core/proguard.flags b/core/proguard.flags
index 6ed1f9b3bc..50049cbdad 100644
--- a/core/proguard.flags
+++ b/core/proguard.flags
@@ -15,4 +15,35 @@
 @**.VisibleForTesting *;
 }
 
+# Understand the @Keep support annotation.
+-keep class android.support.annotation.Keep
+-keep class androidx.annotation.Keep
+
+-keep @android.support.annotation.Keep class * {*;}
+-keep @androidx.annotation.Keep class * {*;}
+
+-keepclasseswithmembers class * {
+    @android.support.annotation.Keep <methods>;
+}
+
+-keepclasseswithmembers class * {
+    @androidx.annotation.Keep <methods>;
+}
+
+-keepclasseswithmembers class * {
+    @android.support.annotation.Keep <fields>;
+}
+
+-keepclasseswithmembers class * {
+    @androidx.annotation.Keep <fields>;
+}
+
+-keepclasseswithmembers class * {
+    @android.support.annotation.Keep <init>(...);
+}
+
+-keepclasseswithmembers class * {
+    @androidx.annotation.Keep <init>(...);
+}
+
 -include proguard_basic_keeps.flags