Refactoring secondary user recents logic.

- Removing old broadcasts in favor of direct aidl interface between
  system and secondary users.  Also moving user specific implementation
  into RecentsImpl, allowing Recents to handle proxying between users.

Change-Id: I4bd5ef1d1ee47309b7c754f50a5e8b2e2aab988f
diff --git a/packages/SystemUI/Android.mk b/packages/SystemUI/Android.mk
index 314b3c4..0cc2a67 100644
--- a/packages/SystemUI/Android.mk
+++ b/packages/SystemUI/Android.mk
@@ -3,7 +3,7 @@
 
 LOCAL_MODULE_TAGS := optional
 
-LOCAL_SRC_FILES := $(call all-java-files-under, src) $(call all-proto-files-under,src) \
+LOCAL_SRC_FILES := $(call all-java-files-under, src) $(call all-proto-files-under,src) $(call all-Iaidl-files-under, src) \
     src/com/android/systemui/EventLogTags.logtags
 
 LOCAL_STATIC_JAVA_LIBRARIES := Keyguard