Remove LinearColorBar and replace uses with ProgressBar.

We never actually needed it, since progress bar can do
everything we want it to. Renamed data_usage_progress to
color_bar_progress to reflect its more generic state.

Updated color_bar_progress to use proper values.
Since we can't seem to use private attrs in settings,
use the dimen/color values that are customizable.

Updated usages to use regular ProgressBar APIs.

Fixes: 74111937
Test: visual inspection and robotests
Change-Id: I4f0c59e6cf5c629e3cc3901800d9c4afc95fa495

res/color/white_disabled.xml

@@ -1,20 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2016 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:color="@android:color/white"
-        android:alpha="?android:attr/disabledAlpha" />
-</selector>