Changed the Task Menu to overlay on top of the task view

When tapping the icon for each card in overview, the options will
overlay on top of the task view below the icon instead of popping up
above the task view.

Change-Id: I42746022432385d976134988262514a238a5066e
Fixes: 109676098
Test: go to overview, tap the icon for the task
diff --git a/quickstep/res/values/styles.xml b/quickstep/res/values/styles.xml
new file mode 100644
index 0000000..bb364ff
--- /dev/null
+++ b/quickstep/res/values/styles.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2018 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>
+    <!-- Task Menu layout styles. -->
+    <style name="TaskMenu">
+        <item name="android:orientation">vertical</item>
+    </style>
+
+    <!-- Task Menu Option layout styles. -->
+    <style name="TaskMenu.Option">
+        <item name="android:layout_width">match_parent</item>
+        <item name="android:layout_height">wrap_content</item>
+    </style>
+</resources>
\ No newline at end of file