Localize Strings in SupportDesignDemos

(cherry picked from commit 4fe89883c24ce8bd443416b01a6e8db148e8cb4c)

Change-Id: I40940d6629f32128b969d169e2893df9c0d169e7

diff --git a/samples/SupportDesignDemos/res/layout/design_tabs_viewpager.xml b/samples/SupportDesignDemos/res/layout/design_tabs_viewpager.xml
index d27f378..5b36331 100644
--- a/samples/SupportDesignDemos/res/layout/design_tabs_viewpager.xml
+++ b/samples/SupportDesignDemos/res/layout/design_tabs_viewpager.xml
@@ -76,13 +76,13 @@
                 android:id="@+id/rb_tab_fixed"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
-                android:text="Fixed"/>
+                android:text="@string/tabs_fixed"/>
 
         <RadioButton
                 android:id="@+id/rb_tab_scrollable"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
-                android:text="Scrollable"/>
+                android:text="@string/tabs_scrollable"/>
     </RadioGroup>
 
     <RadioGroup
@@ -97,13 +97,13 @@
                 android:id="@+id/rb_tab_g_center"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
-                android:text="Center"/>
+                android:text="@string/tabs_gravity_center"/>
 
         <RadioButton
                 android:id="@+id/rb_tab_g_fill"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
-                android:text="Fill"/>
+                android:text="@string/tabs_gravity_fill"/>
 
     </RadioGroup>
 
diff --git a/samples/SupportDesignDemos/res/values/strings.xml b/samples/SupportDesignDemos/res/values/strings.xml
index 9b87ccf..104fb92 100644
--- a/samples/SupportDesignDemos/res/values/strings.xml
+++ b/samples/SupportDesignDemos/res/values/strings.xml
@@ -22,4 +22,9 @@
     <string name="fab_size_normal">Normal size</string>
     <string name="fab_size_mini">Mini size</string>
 
+    <string name="tabs_fixed">Fixed</string>
+    <string name="tabs_scrollable">Scrollable</string>
+    <string name="tabs_gravity_center">Center</string>
+    <string name="tabs_gravity_fill">Fill</string>
+
 </resources>