UI Improvements

Update the custom theme steps based on the latest spec:
 - Remove font name from custom font card
 - Don't use a card any more
 - Update the landscape layout for custom editor

Make the bottom full screen as speced for full gesture nav.

Bug: 129154138
Fixes: 130763683
Change-Id: Ie6191caed915ea6bfcfa255c541f55504d97c4d3
diff --git a/res/layout-land/activity_custom_theme.xml b/res/layout-land/activity_custom_theme.xml
new file mode 100644
index 0000000..59296df
--- /dev/null
+++ b/res/layout-land/activity_custom_theme.xml
@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2019 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.
+-->
+<FrameLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context="com.android.customization.picker.theme.CustomThemeActivity">
+
+    <FrameLayout
+        android:id="@+id/fragment_container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"/>
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom"
+        android:orientation="horizontal">
+        <Space
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            android:layout_weight="1"
+            android:layout_gravity="bottom"/>
+
+        <FrameLayout
+            android:id="@+id/custom_theme_nav"
+            android:layout_width="0dp"
+            android:layout_height="@dimen/custom_theme_nav_height"
+            android:layout_weight="1"
+            android:paddingHorizontal="12dp">
+            <Button
+                android:id="@+id/previous_button"
+                style="@style/ActionSecondaryButton"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="start|center_vertical"
+                android:text="@string/custom_theme_previous"/>
+            <Button
+                android:id="@+id/next_button"
+                style="@style/ActionPrimaryButton"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="end|center_vertical"
+                android:text="@string/custom_theme_next"/>
+        </FrameLayout>
+    </LinearLayout>
+
+</FrameLayout>