Use framework scheme definitions

Use PhoneAccount defined values for SCHEME_{TEL, SIP, VOICEMAIL}.

Bug:17398074
Change-Id: I36adb16f659daef89957072f9e00d08ea2cb8e9e
diff --git a/src/com/android/phone/OtaUtils.java b/src/com/android/phone/OtaUtils.java
index fe11831..4a9154f 100644
--- a/src/com/android/phone/OtaUtils.java
+++ b/src/com/android/phone/OtaUtils.java
@@ -37,6 +37,7 @@
 import android.os.SystemClock;
 import android.os.SystemProperties;
 import android.os.UserHandle;
+import android.telecomm.PhoneAccount;
 import android.telephony.TelephonyManager;
 import android.util.Log;
 import android.view.KeyEvent;
@@ -687,7 +688,7 @@
         if (!mApplication.cdmaOtaProvisionData.inOtaSpcState) {
             // Place an outgoing call to the special OTASP number:
             Intent newIntent = new Intent(Intent.ACTION_CALL);
-            newIntent.setData(Uri.fromParts(Constants.SCHEME_TEL, OTASP_NUMBER, null));
+            newIntent.setData(Uri.fromParts(PhoneAccount.SCHEME_TEL, OTASP_NUMBER, null));
 
             // Initiate the outgoing call:
             mApplication.callController.placeCall(newIntent);