Fix ProgressCategory theming and layout

- add missing constructors for correct theming
- fix layout by adding missing paddingStart / paddingEnd

Change-Id: I52a511d326b760a47339b2b9dad349c9f825dbd2

src/com/android/settings/ProgressCategory.java

@@ -21,17 +21,35 @@ import android.preference.Preference;
 import android.util.AttributeSet;
 import android.view.View;
 
+/**
+ * A category with a progress spinner
+ */
 public class ProgressCategory extends ProgressCategoryBase {
 
-    private final int mEmptyTextRes;
+    private int mEmptyTextRes;
     private boolean mProgress = false;
     private Preference mNoDeviceFoundPreference;
     private boolean mNoDeviceFoundAdded;
 
+    public ProgressCategory(Context context) {
+        this(context, null);
+    }
+
+    public ProgressCategory(Context context, AttributeSet attrs) {
+        super(context, attrs, 0);
+    }
+
     public ProgressCategory(Context context, AttributeSet attrs,
-            int emptyTextRes) {
-        super(context, attrs);
+            int defStyleAttr) {
+        this(context, attrs, defStyleAttr, 0);
+    }
+
+    public ProgressCategory(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
+        super(context, attrs, defStyleAttr, defStyleRes);
         setLayoutResource(R.layout.preference_progress_category);
+    }
+
+    public void setEmptyTextRes(int emptyTextRes) {
         mEmptyTextRes = emptyTextRes;
     }