Add list of accounts in Phone Account Settings.

+ Add new constants to define SubId/SubLabels on intent which opens
the call settings.
+ Add an "accounts" preference category to phone account settings.
+ Add preferences to this new performance category for each
subscription.
+ Configure these preferences to launch an intent to start call
settings, containing the id and label of the subscription.

Bug: 18114923
Change-Id: I989bf3480418c9ac003dce677ec7b3585e82a551
diff --git a/src/com/android/phone/CallFeaturesSetting.java b/src/com/android/phone/CallFeaturesSetting.java
index b7f2d55..b207c77 100644
--- a/src/com/android/phone/CallFeaturesSetting.java
+++ b/src/com/android/phone/CallFeaturesSetting.java
@@ -114,6 +114,13 @@
     // to trigger its configuration UI
     public static final String ACTION_CONFIGURE_VOICEMAIL =
             "com.android.phone.CallFeaturesSetting.CONFIGURE_VOICEMAIL";
+    // Extra on intent to Call Settings containing the id of the subscription to modify.
+    public static final String SUB_ID_EXTRA =
+            "com.android.phone.CallFeaturesSetting.SubscriptionId";
+    // Extra on intent to Call Settings containing the label of the subscription to modify.
+    public static final String SUB_LABEL_EXTRA =
+            "com.android.phone.CallFeaturesSetting.SubscriptionLabel";
+
     // Extra put in the return from VM provider config containing voicemail number to set
     public static final String VM_NUMBER_EXTRA = "com.android.phone.VoicemailNumber";
     // Extra put in the return from VM provider config containing call forwarding number to set
@@ -123,10 +130,6 @@
     // If the VM provider returns non null value in this extra we will force the user to
     // choose another VM provider
     public static final String SIGNOUT_EXTRA = "com.android.phone.Signout";
-    //Information about logical "up" Activity
-    private static final String UP_ACTIVITY_PACKAGE = "com.android.dialer";
-    private static final String UP_ACTIVITY_CLASS =
-            "com.android.dialer.DialtactsActivity";
 
     // Suffix appended to provider key for storing vm number
     public static final String VM_NUMBER_TAG = "#VMNumber";
@@ -810,7 +813,7 @@
             mNewFwdSettings = VoicemailProviderSettings.NO_FORWARDING;
         }
 
-        //Throw a warning if the voicemail is the same and we did not change forwarding.
+        // Throw a warning if the voicemail is the same and we did not change forwarding.
         if (mNewVMNumber.equals(mOldVmNumber)
                 && mNewFwdSettings == VoicemailProviderSettings.NO_FORWARDING) {
             showVMDialog(MSG_VM_NOCHANGE);