Set consumer Proguard rules.

components/places/android/library/build.gradle

@@ -17,6 +17,7 @@ android {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            consumerProguardFiles "$rootDir/proguard-rules-consumer-jna.pro"
         }
 
         withoutLib {

composites/lockbox/android/library/build.gradle

@@ -17,6 +17,7 @@ android {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            consumerProguardFiles "$rootDir/proguard-rules-consumer-jna.pro"
         }
     }
 

composites/reference-browser/android/library/build.gradle

@@ -17,6 +17,7 @@ android {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            consumerProguardFiles "$rootDir/proguard-rules-consumer-jna.pro"
         }
     }
 

fxa-client/sdks/android/library/build.gradle

@@ -17,6 +17,7 @@ android {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            consumerProguardFiles "$rootDir/proguard-rules-consumer-jna.pro"
         }
 
         withoutLib {

logins-api/android/library/build.gradle

@@ -17,6 +17,7 @@ android {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            consumerProguardFiles "$rootDir/proguard-rules-consumer-jna.pro"
         }
 
         withoutLib {

proguard-rules-consumer-jna.pro

@@ -0,0 +1,7 @@
+# ProGuard rules for consumers of this library.
+
+# JNA specific rules
+# See https://github.com/java-native-access/jna/blob/master/www/FrequentlyAskedQuestions.md#jna-on-android
+-dontwarn java.awt.*
+-keep class com.sun.jna.* { *; }
+-keepclassmembers class * extends com.sun.jna.* { public *; }