Unify data/power layout, confirm disable, round.

Share consistent layout between data usage and battery usage.  Show
confirmation dialog before disabling mobile data.  Round warning/limit
sweep values to match displayed label.  Suppress fade when switching
data usage tabs.

Bug: 5208510, 5058157, 5038589, 5252816
Change-Id: I3c76f3397445d2d3b173666a41672871df4c61af

res/layout/data_usage_item.xml

@@ -1,57 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2011 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.
--->
-
-<GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:paddingLeft="@*android:dimen/preference_item_padding_side"
-    android:paddingRight="@*android:dimen/preference_item_padding_side"
-    android:paddingTop="8dip"
-    android:paddingBottom="8dip"
-    android:columnCount="3">
-
-    <ImageView
-        android:id="@android:id/icon"
-        android:layout_width="48dip"
-        android:layout_height="48dip"
-        android:layout_rowSpan="2"
-        android:layout_marginRight="8dip"
-        android:scaleType="centerInside" />
-
-    <TextView
-        android:id="@android:id/title"
-        android:layout_width="0dip"
-        android:layout_gravity="fill_horizontal"
-        android:singleLine="true"
-        android:ellipsize="marquee"
-        android:textAppearance="?android:attr/textAppearanceMedium" />
-
-    <TextView
-        android:id="@android:id/summary"
-        android:layout_marginLeft="8dip"
-        android:textAppearance="?android:attr/textAppearanceSmall" />
-
-    <ProgressBar
-        android:id="@android:id/progress"
-        android:layout_height="12dip"
-        android:layout_columnSpan="2"
-        android:layout_gravity="fill_horizontal"
-        android:layout_marginTop="4dip"
-        android:max="100"
-        android:progressDrawable="@drawable/data_usage_bar"
-        style="?android:attr/progressBarStyleHorizontal" />
-
-</GridLayout>