Support CDMA emergency callback. (1/2)

1. Update emergency callback mode notification icon and update creation of
the notification to use a builder.
2. For CDMA calls, if phone is in ECM mode, disable mute in the
Connection PhoneCapabilities.

Bug: 16182748
Change-Id: I698eb7d377346467fc4b87a0bec53d89f96797b1
diff --git a/src/com/android/phone/EmergencyCallbackModeExitDialog.java b/src/com/android/phone/EmergencyCallbackModeExitDialog.java
index 7758b23..921b7f7 100644
--- a/src/com/android/phone/EmergencyCallbackModeExitDialog.java
+++ b/src/com/android/phone/EmergencyCallbackModeExitDialog.java
@@ -205,7 +205,7 @@
         case EXIT_ECM_DIALOG:
             CharSequence text = getDialogText(mEcmTimeout);
             mAlertDialog = new AlertDialog.Builder(EmergencyCallbackModeExitDialog.this)
-                    .setIcon(R.drawable.picture_emergency32x32)
+                    .setIcon(R.drawable.ic_emergency_callback_mode)
                     .setTitle(R.string.phone_in_ecm_notification_title)
                     .setMessage(text)
                     .setPositiveButton(R.string.alert_dialog_yes,
@@ -233,7 +233,7 @@
 
         case EXIT_ECM_IN_EMERGENCY_CALL_DIALOG:
             mAlertDialog = new AlertDialog.Builder(EmergencyCallbackModeExitDialog.this)
-                    .setIcon(R.drawable.picture_emergency32x32)
+                    .setIcon(R.drawable.ic_emergency_callback_mode)
                     .setTitle(R.string.phone_in_ecm_notification_title)
                     .setMessage(R.string.alert_dialog_in_ecm_call)
                     .setNeutralButton(R.string.alert_dialog_dismiss,