Add 208dp bucket for Wear Device Support

Bug: 130687325

Change-Id: I94b5da24aec75e18f6a2135f8a47e918851529c3
(cherry picked from commit c396828c381fe97b6810ab601e32d860cd0c5c43)
(cherry picked from commit af34513a797a1187117bc7a2e2ed8392b04beb5b)

core/res/res/values-w208dp/dimens_material.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 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.
+-->
+<resources>
+    <dimen name="screen_percentage_05">10.4dp</dimen>
+    <dimen name="screen_percentage_10">20.8dp</dimen>
+    <dimen name="screen_percentage_15">31.2dp</dimen>
+</resources>