Force application context for KeyChain bindings

Bug: 29873669
Change-Id: I68c11ab19a169498045bbc23bc8fe6a2f46be031
(cherry picked from commit 43e235c0d55fce8ff845c0249a414a1b2daa5b10)
diff --git a/keystore/java/android/security/KeyChain.java b/keystore/java/android/security/KeyChain.java
index cce58c2..30e5a2e 100644
--- a/keystore/java/android/security/KeyChain.java
+++ b/keystore/java/android/security/KeyChain.java
@@ -368,7 +368,7 @@
         if (alias == null) {
             throw new NullPointerException("alias == null");
         }
-        KeyChainConnection keyChainConnection = bind(context);
+        KeyChainConnection keyChainConnection = bind(context.getApplicationContext());
         try {
             final IKeyChainService keyChainService = keyChainConnection.getService();
             final String keyId = keyChainService.requestPrivateKey(alias);
@@ -412,7 +412,7 @@
         if (alias == null) {
             throw new NullPointerException("alias == null");
         }
-        KeyChainConnection keyChainConnection = bind(context);
+        KeyChainConnection keyChainConnection = bind(context.getApplicationContext());
         try {
             IKeyChainService keyChainService = keyChainConnection.getService();