Initial checkin of AOSP Messaging app.

b/23110861

Change-Id: I9aa980d7569247d6b2ca78f5dcb4502e1eaadb8a

res/layout/custom_header_view_pager.xml

@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright (C) 2015 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.
+-->
+<merge xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <com.android.messaging.ui.ViewPagerTabs
+        android:id="@+id/tab_strip"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:textAllCaps="true"
+        android:orientation="horizontal"
+        style="@style/PagerTabHeader" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1">
+
+        <android.support.v4.view.ViewPager
+            android:id="@+id/pager"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent" />
+
+        <View
+            android:layout_width="match_parent"
+            android:layout_height="2dp"
+            android:layout_gravity="top"
+            android:background="@drawable/compose_chips_divider_gradient"/>
+
+    </FrameLayout>
+</merge>