ProcessPendingMessagesAction works based on subscriptions

PorcessPendingMessagesAction queues one message for sending/downloading
associated with a subscription triggering current action at a time. And
the ConnectivityUtil also works based on subscriptions so that pending
messages can be processed regardless of other phones' state in multi-sim
case.

It includes cleanup code as well.

Test: Manual

Change-Id: Id6b4f4a0aa6a3291e7a4d8a5d3f0fbb9db3c5b86
Signed-off-by: Taesu Lee <taesu82.lee@samsung.com>

src/com/android/messaging/datamodel/action/InsertNewMessageAction.java

@@ -118,7 +118,6 @@ public class InsertNewMessageAction extends Action implements Parcelable {
      */
     @Override
     protected Object executeAction() {
-        LogUtil.i(TAG, "InsertNewMessageAction: inserting new message");
         MessageData message = actionParameters.getParcelable(KEY_MESSAGE);
         if (message == null) {
             LogUtil.i(TAG, "InsertNewMessageAction: Creating MessageData with provided data");
@@ -151,6 +150,8 @@ public class InsertNewMessageAction extends Action implements Parcelable {
             return null;
         }
         final int subId = self.getSubId();
+        LogUtil.i(TAG, "InsertNewMessageAction: inserting new message for subId " + subId);
+        actionParameters.putInt(KEY_SUB_ID, subId);
 
         // TODO: Work out whether to send with SMS or MMS (taking into account recipients)?
         final boolean isSms = (message.getProtocol() == MessageData.PROTOCOL_SMS);