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

tests/robotests/src/com/android/settings/widget/RingProgressBarTest.java

@@ -22,6 +22,7 @@ import android.content.Context;
 import android.view.View.MeasureSpec;
 
 import com.android.settings.testutils.SettingsRobolectricTestRunner;
+import com.android.settings.testutils.shadow.SettingsShadowResourcesImpl;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -29,6 +30,7 @@ import org.junit.runner.RunWith;
 import org.robolectric.RuntimeEnvironment;
 
 @RunWith(SettingsRobolectricTestRunner.class)
+@org.robolectric.annotation.Config(shadows = SettingsShadowResourcesImpl.class)
 public class RingProgressBarTest {
 
     private Context mContext = RuntimeEnvironment.application;