Update font/display size pages for support large screen in SuW

- Follow the SuW design of the UI guideline.
- Add the footer button for each pages.
- Add a new AccessibilityScreenSizeForSetupWizardActivity for SuW.
- Add suw_font_size_fragment.xml and suw_screen_zoom_fragment.xml
  for each fragment.
- Shorten 50% of the preview height.

Bug: 194447311
Fixes: 199369859
Test: manual test
Test: make RunSettingsRoboTests -j ROBOTEST_FILTER=com.android.settings.accessibility
Test: make RunSettingsRoboTests -j ROBOTEST_FILTER=com.android.settings.display
Change-Id: I2685e96d37d542490521ec24cfce490f87cbd88d

src/com/android/settings/display/PreviewPagerAdapter.java

@@ -109,6 +109,10 @@ public class PreviewPagerAdapter extends PagerAdapter {
         return (view == object);
     }
 
+    FrameLayout[] getPreviewFrames() {
+        return mPreviewFrames;
+    }
+
     boolean isAnimating() {
         return mAnimationCounter > 0;
     }