Remove Toggle System UI options from Support7Demos

As system ui visibility can not be reliably controlled
at the moment for <v11. Remove this from the demo.

Bug: 8910792.

Change-Id: Id55f8ae57c0961130c2ad2ab7a5b97cc43e36883
Signed-off-by: Chris Banes <chrisbanes@google.com>

samples/Support7Demos/res/layout/action_bar_display_options.xml

diff --git a/samples/Support7Demos/res/layout/action_bar_display_options.xml b/samples/Support7Demos/res/layout/action_bar_display_options.xml
index d4216f5..2efb7c2 100644
--- a/samples/Support7Demos/res/layout/action_bar_display_options.xml
+++ b/samples/Support7Demos/res/layout/action_bar_display_options.xml
@@ -51,9 +51,5 @@
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:text="@string/toggle_visibility" />
-        <Button android:id="@+id/toggle_system_ui"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:text="@string/toggle_system_ui" />
     </LinearLayout>
 </ScrollView>
\ No newline at end of file

samples/Support7Demos/res/values/strings.xml

diff --git a/samples/Support7Demos/res/values/strings.xml b/samples/Support7Demos/res/values/strings.xml
index 5cafc80..6a8ac77 100644
--- a/samples/Support7Demos/res/values/strings.xml
+++ b/samples/Support7Demos/res/values/strings.xml
@@ -70,7 +70,6 @@
     <string name="toggle_navigation">Navigation</string>
     <string name="cycle_custom_gravity">Cycle Custom View Gravity</string>
     <string name="toggle_visibility">Toggle Visibility</string>
-    <string name="toggle_system_ui">Toggle System UI</string>
 
     <string name="display_options_custom_button">Custom View!</string>
     <string name="display_options_menu_item">Menu Item</string>

samples/Support7Demos/src/com/example/android/supportv7/app/ActionBarDisplayOptions.java

diff --git a/samples/Support7Demos/src/com/example/android/supportv7/app/ActionBarDisplayOptions.java b/samples/Support7Demos/src/com/example/android/supportv7/app/ActionBarDisplayOptions.java
index b0d00fc..b7b25e8 100644
--- a/samples/Support7Demos/src/com/example/android/supportv7/app/ActionBarDisplayOptions.java
+++ b/samples/Support7Demos/src/com/example/android/supportv7/app/ActionBarDisplayOptions.java
@@ -22,9 +22,9 @@
 import android.support.v7.app.ActionBarActivity;
 import android.view.Gravity;
 import android.view.Menu;
-import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup.LayoutParams;
+
 import com.example.android.supportv7.R;
 
 /**
@@ -48,7 +48,6 @@
         findViewById(R.id.toggle_navigation).setOnClickListener(this);
         findViewById(R.id.cycle_custom_gravity).setOnClickListener(this);
         findViewById(R.id.toggle_visibility).setOnClickListener(this);
-        findViewById(R.id.toggle_system_ui).setOnClickListener(this);
 
         // Configure several action bar elements that will be toggled by display options.
         mCustomView = getLayoutInflater().inflate(R.layout.action_bar_display_options_custom, null);
@@ -125,15 +124,6 @@
                     bar.show();
                 }
                 return;
-            case R.id.toggle_system_ui:
-                if ((getWindow().getDecorView().getSystemUiVisibility()
-                        & View.SYSTEM_UI_FLAG_FULLSCREEN) != 0) {
-                    getWindow().getDecorView().setSystemUiVisibility(0);
-                } else {
-                    getWindow().getDecorView().setSystemUiVisibility(
-                            View.SYSTEM_UI_FLAG_FULLSCREEN);
-                }
-                return;
         }
 
         int change = bar.getDisplayOptions() ^ flags;