Remove the current battery usage chart and replace it with new one

Bug: 183921876
Test: make SettingsRoboTests
Test: make SettingsGoogleRoboTests
Change-Id: I06f0eb5c09d07a9db0d1a93cda751e8fad672c79

src/com/android/settings/fuelgauge/BatteryChartView.java

@@ -95,6 +95,7 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
     public void setLevels(int[] levels) {
         // We should provide trapezoid count + 1 data to draw all trapezoids.
         mLevels = levels.length == mTrapezoidCount + 1 ? levels : null;
+        setClickable(mLevels != null);
         invalidate();
     }