Use res-auto xml namespace in SupportDesignDemos.

Change-Id: I087faedffb68dc61f4698439188b8d2ef4e88b5c
diff --git a/samples/SupportDesignDemos/res/layout/design_bottom_sheet_hideable.xml b/samples/SupportDesignDemos/res/layout/design_bottom_sheet_hideable.xml
index d139a92..6afd431 100644
--- a/samples/SupportDesignDemos/res/layout/design_bottom_sheet_hideable.xml
+++ b/samples/SupportDesignDemos/res/layout/design_bottom_sheet_hideable.xml
@@ -17,7 +17,7 @@
 <android.support.design.widget.CoordinatorLayout
         android:id="@+id/coordinator"
         xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:app="http://schemas.android.com/apk/res/com.example.android.support.design"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
         android:layout_width="match_parent"
         android:layout_height="match_parent">
 
diff --git a/samples/SupportDesignDemos/res/layout/design_bottom_sheet_persistent.xml b/samples/SupportDesignDemos/res/layout/design_bottom_sheet_persistent.xml
index 65ed728..e7943d9 100644
--- a/samples/SupportDesignDemos/res/layout/design_bottom_sheet_persistent.xml
+++ b/samples/SupportDesignDemos/res/layout/design_bottom_sheet_persistent.xml
@@ -17,7 +17,7 @@
 <android.support.design.widget.CoordinatorLayout
         android:id="@+id/coordinator"
         xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:app="http://schemas.android.com/apk/res/com.example.android.support.design"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
         android:layout_width="match_parent"
         android:layout_height="match_parent">
 
diff --git a/samples/SupportDesignDemos/res/layout/design_bottom_sheet_scroll.xml b/samples/SupportDesignDemos/res/layout/design_bottom_sheet_scroll.xml
index 7b3da9f..6635403 100644
--- a/samples/SupportDesignDemos/res/layout/design_bottom_sheet_scroll.xml
+++ b/samples/SupportDesignDemos/res/layout/design_bottom_sheet_scroll.xml
@@ -17,7 +17,7 @@
 <android.support.design.widget.CoordinatorLayout
         android:id="@+id/coordinator"
         xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:app="http://schemas.android.com/apk/res/com.example.android.support.design"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
         android:layout_width="match_parent"
         android:layout_height="match_parent">
 
diff --git a/samples/SupportDesignDemos/res/layout/design_bottom_sheet_with_fab.xml b/samples/SupportDesignDemos/res/layout/design_bottom_sheet_with_fab.xml
index c9786d7..343577b 100644
--- a/samples/SupportDesignDemos/res/layout/design_bottom_sheet_with_fab.xml
+++ b/samples/SupportDesignDemos/res/layout/design_bottom_sheet_with_fab.xml
@@ -17,7 +17,7 @@
 <android.support.design.widget.CoordinatorLayout
     android:id="@+id/coordinator"
     xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res/com.example.android.support.design"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
diff --git a/samples/SupportDesignDemos/res/layout/design_navigation_without_drawer.xml b/samples/SupportDesignDemos/res/layout/design_navigation_without_drawer.xml
index 31cf5de..12fd959 100644
--- a/samples/SupportDesignDemos/res/layout/design_navigation_without_drawer.xml
+++ b/samples/SupportDesignDemos/res/layout/design_navigation_without_drawer.xml
@@ -15,7 +15,7 @@
      limitations under the License.
 -->
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-              xmlns:app="http://schemas.android.com/apk/res/com.example.android.support.design"
+              xmlns:app="http://schemas.android.com/apk/res-auto"
               android:orientation="horizontal"
               android:layout_width="match_parent"
               android:layout_height="match_parent">