Debug settings changes

 Bug: 3250498
 Makes OpenGL rendering and user agent normally visible in settings->debug
 Changing the OpenGL setting now automatically restarts the browser

Change-Id: I04036b580f2463f77376edb4bee2dfefe3d123ed
diff --git a/src/com/android/browser/BrowserPreferencesPage.java b/src/com/android/browser/BrowserPreferencesPage.java
index d93e70f..c47675d 100644
--- a/src/com/android/browser/BrowserPreferencesPage.java
+++ b/src/com/android/browser/BrowserPreferencesPage.java
@@ -34,7 +34,7 @@
     public void onBuildHeaders(List<Header> target) {
         loadHeadersFromResource(R.xml.preference_headers, target);
 
-        if (BrowserSettings.getInstance().showDebugSettings()) {
+        if (BrowserSettings.DEV_BUILD || BrowserSettings.getInstance().showDebugSettings()) {
             Header debug = new Header();
             debug.title = getText(R.string.pref_development_title);
             debug.fragment = DebugPreferencesFragment.class.getName();