batterymeter -> just meter.

This updates some of the names of the colors to make them more general
for non-battery usage.

Bug: 35245772
Test: Manual
Change-Id: I048f673037c4bd7279fd7c55f2d55be6b3618b41
diff --git a/packages/SystemUI/src/com/android/systemui/BatteryMeterView.java b/packages/SystemUI/src/com/android/systemui/BatteryMeterView.java
index 9dd39d4..cf8747e 100644
--- a/packages/SystemUI/src/com/android/systemui/BatteryMeterView.java
+++ b/packages/SystemUI/src/com/android/systemui/BatteryMeterView.java
@@ -89,7 +89,7 @@
         TypedArray atts = context.obtainStyledAttributes(attrs, R.styleable.BatteryMeterView,
                 defStyle, 0);
         final int frameColor = atts.getColor(R.styleable.BatteryMeterView_frameColor,
-                context.getColor(R.color.batterymeter_frame_color));
+                context.getColor(R.color.meter_background_color));
         mDrawable = new BatteryMeterDrawableBase(context, frameColor);
         atts.recycle();