Add CTL + nested Toolbar demo

BUG: 25680977
Change-Id: I50a64d1cf08f779aa37fa4c0221eac556c1fb087
diff --git a/samples/SupportDesignDemos/AndroidManifest.xml b/samples/SupportDesignDemos/AndroidManifest.xml
index 16665b1..9d724b3 100644
--- a/samples/SupportDesignDemos/AndroidManifest.xml
+++ b/samples/SupportDesignDemos/AndroidManifest.xml
@@ -163,6 +163,15 @@
             </intent-filter>
         </activity>
 
+        <activity android:name=".widget.AppBarLayoutToolbarCollapseThenPinNested"
+                  android:label="@string/design_appbar_collapsing_toolbar_pin_nested"
+                  android:theme="@style/Theme.Design">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="com.example.android.support.design.SAMPLE_CODE" />
+            </intent-filter>
+        </activity>
+
         <activity android:name=".widget.AppBarLayoutToolbarCollapseThenScroll"
                   android:label="@string/design_appbar_collapsing_toolbar_scroll"
                   android:theme="@style/Theme.Design">
diff --git a/samples/SupportDesignDemos/res/layout/design_appbar_toolbar_collapse_pin_nested.xml b/samples/SupportDesignDemos/res/layout/design_appbar_toolbar_collapse_pin_nested.xml
new file mode 100644
index 0000000..baed926
--- /dev/null
+++ b/samples/SupportDesignDemos/res/layout/design_appbar_toolbar_collapse_pin_nested.xml
@@ -0,0 +1,59 @@
+<?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.
+-->
+
+<android.support.design.widget.CoordinatorLayout
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
+        android:id="@+id/col"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+    <android.support.design.widget.AppBarLayout
+            android:id="@+id/app_bar"
+            android:layout_height="192dp"
+            android:layout_width="match_parent">
+
+        <android.support.design.widget.CollapsingToolbarLayout
+                android:id="@+id/collapsing_app_bar"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                app:layout_scrollFlags="scroll|exitUntilCollapsed"
+                app:toolbarId="@+id/toolbar">
+
+            <FrameLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="8dp"
+                    android:layout_marginBottom="16dp"
+                    android:background="?android:colorBackground"
+                    app:layout_collapseMode="pin">
+
+                <android.support.v7.widget.Toolbar
+                        android:id="@+id/toolbar"
+                        android:layout_height="?attr/actionBarSize"
+                        android:layout_width="match_parent"
+                        android:theme="@style/ThemeOverlay.AppCompat.Light"/>
+
+            </FrameLayout>
+
+        </android.support.design.widget.CollapsingToolbarLayout>
+
+    </android.support.design.widget.AppBarLayout>
+
+    <include layout="@layout/include_appbar_recyclerview"/>
+
+</android.support.design.widget.CoordinatorLayout>
diff --git a/samples/SupportDesignDemos/res/values/strings.xml b/samples/SupportDesignDemos/res/values/strings.xml
index 60dddfe..19b8c1e 100644
--- a/samples/SupportDesignDemos/res/values/strings.xml
+++ b/samples/SupportDesignDemos/res/values/strings.xml
@@ -74,6 +74,7 @@
     <string name="design_appbar_toolbar_scroll_tabs_pin_with_swiperefresh">AppBar/Toolbar Scroll + Tabs Pin + Swipe Refresh</string>
     <string name="design_appbar_collapsing_toolbar_pin">AppBar/Collapsing Toolbar (pinned)</string>
     <string name="design_appbar_collapsing_toolbar_pin_fab">AppBar/Collapsing Toolbar (pinned with FAB)</string>
+    <string name="design_appbar_collapsing_toolbar_pin_nested">AppBar/Collapsing Toolbar (pinned + nested)</string>
     <string name="design_appbar_collapsing_toolbar_scroll">AppBar/Collapsing Toolbar (scroll off)</string>
     <string name="design_appbar_collapsing_toolbar_scroll_with_swiperefresh">AppBar/Collapsing Toolbar (scroll off) + Swipe Refresh</string>
     <string name="design_appbar_collapsing_toolbar_with_image">AppBar/Collapsing Toolbar + Parallax Image</string>
diff --git a/samples/SupportDesignDemos/src/com/example/android/support/design/widget/AppBarLayoutToolbarCollapseThenPinNested.java b/samples/SupportDesignDemos/src/com/example/android/support/design/widget/AppBarLayoutToolbarCollapseThenPinNested.java
new file mode 100644
index 0000000..957e248
--- /dev/null
+++ b/samples/SupportDesignDemos/src/com/example/android/support/design/widget/AppBarLayoutToolbarCollapseThenPinNested.java
@@ -0,0 +1,27 @@
+/*
+ * 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.
+ */
+
+package com.example.android.support.design.widget;
+
+import com.example.android.support.design.R;
+
+public class AppBarLayoutToolbarCollapseThenPinNested extends AppBarLayoutUsageBase {
+
+    @Override
+    protected int getLayoutId() {
+        return R.layout.design_appbar_toolbar_collapse_pin_nested;
+    }
+}