Fix the build

Turned out we *are* using android-common.

Change-Id: Iafaee8d85014ab8f325c8d48b969985352d85a9a
diff --git a/Android.mk b/Android.mk
index 5707fe2..ebf2934 100644
--- a/Android.mk
+++ b/Android.mk
@@ -24,6 +24,7 @@
     src/com/android/email/service/IEmailServiceCallback.aidl
 # EXCHANGE-REMOVE-SECTION-END
 
+LOCAL_STATIC_JAVA_LIBRARIES := android-common
 # Revive this when the app is unbundled.
 # LOCAL_SDK_VERSION := current