Sort out permission around "instant text response"

- Remove SEND_SMS_NO_CONFIRMATION

- Add SEND_RESPOND_VIA_MESSAGE Permission
  This permission is held by the phone and applications that want to
  handle respond-via-message should require this permission of the
  sender.  This permission is signature/system and currently only held
  by the Phone app.

Bug: 5108429
Change-Id: Ib611368d488de2f8e1e853f550eb2c654305eda4

telephony/java/android/telephony/TelephonyManager.java

@@ -124,6 +124,28 @@ public class TelephonyManager {
     public static final String ACTION_PHONE_STATE_CHANGED =
             "android.intent.action.PHONE_STATE";
 
+    /**
+     * The Phone app sends this intent when a user opts to respond-via-message during an incoming
+     * call. By default, the MMS app consumes this message and sends a text message to the caller. A
+     * third party app can provide this functionality in lieu of MMS app by consuming this Intent
+     * and sending the message using their own messaging system.  The intent contains a URI
+     * describing the recipient, and an EXTRA containg the message itself.
+     * <p>
+     * The intent-filter which consumes this Intent needs to be in a service which requires the
+     * permission SEND_RESPOND_VIA_MESSAGE.
+     *
+     * <p>
+     * {@link #getData} is a URI describing the recipient of the message.
+     * <p>
+     * The {@link android.intent.Intent#EXTRA_TEXT} extra contains the message
+     * to send.
+     * <p>
+     * Output: nothing.
+     */
+    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
+    public static final String ACTION_RESPOND_VIA_MESSAGE =
+            "android.intent.action.RESPOND_VIA_MESSAGE";
+
     /**
      * The lookup key used with the {@link #ACTION_PHONE_STATE_CHANGED} broadcast
      * for a String containing the new call state.