Use framework scheme definitions

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

Bug:17398074
Change-Id: I77dfa539646b9c5ae5dca220bbc906048a17b383
diff --git a/src/com/android/dialer/DialtactsActivity.java b/src/com/android/dialer/DialtactsActivity.java
index 035ec8b..b80c27b 100644
--- a/src/com/android/dialer/DialtactsActivity.java
+++ b/src/com/android/dialer/DialtactsActivity.java
@@ -32,6 +32,7 @@
 import android.provider.ContactsContract.Intents;
 import android.speech.RecognizerIntent;
 import android.support.v4.view.ViewPager;
+import android.telecomm.PhoneAccount;
 import android.telecomm.TelecommManager;
 import android.telephony.TelephonyManager;
 import android.text.Editable;
@@ -817,7 +818,7 @@
         }
         if (Intent.ACTION_VIEW.equals(action)) {
             final Uri data = intent.getData();
-            if (data != null && CallUtil.SCHEME_TEL.equals(data.getScheme())) {
+            if (data != null && PhoneAccount.SCHEME_TEL.equals(data.getScheme())) {
                 return true;
             }
         }