Ensure that vrPrefsWorkAround method is called before creating the Gecko Runtime (#3654)

Author: MortimerGoro

app/src/common/shared/org/mozilla/vrbrowser/VRBrowserActivity.java

@@ -228,8 +228,6 @@ protected void attachBaseContext(Context base) {
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
-        Bundle extras = getIntent() != null ? getIntent().getExtras() : null;
-        SessionStore.prefOverrides(this, extras);
         ((VRBrowserApplication)getApplication()).onActivityCreate(this);
         SettingsStore.getInstance(getBaseContext()).setPid(Process.myPid());
         // Fix for infinite restart on startup crashes.

app/src/common/shared/org/mozilla/vrbrowser/VRBrowserApplication.java

@@ -17,6 +17,7 @@
 import org.mozilla.vrbrowser.browser.Places;
 import org.mozilla.vrbrowser.browser.Services;
 import org.mozilla.vrbrowser.browser.engine.EngineProvider;
+import org.mozilla.vrbrowser.browser.engine.SessionStore;
 import org.mozilla.vrbrowser.db.AppDatabase;
 import org.mozilla.vrbrowser.db.DataRepository;
 import org.mozilla.vrbrowser.downloads.DownloadsManager;
@@ -52,6 +53,7 @@ public void onCreate() {
             return;
         }
 
+        SessionStore.prefOverrides(this);
         TelemetryWrapper.init(this, EngineProvider.INSTANCE.getDefaultClient(this));
         GleanMetricsService.init(this, EngineProvider.INSTANCE.getDefaultClient(this));
     }

app/src/common/shared/org/mozilla/vrbrowser/browser/engine/EngineProvider.kt

@@ -58,6 +58,11 @@ object EngineProvider {
         return runtime!!
     }
 
+    @Synchronized
+    fun isRuntimeCreated(): Boolean {
+        return runtime != null
+    }
+
     fun createGeckoWebExecutor(context: Context): GeckoWebExecutor {
         return GeckoWebExecutor(getOrCreateRuntime(context))
     }

app/src/common/shared/org/mozilla/vrbrowser/browser/engine/SessionStore.java

@@ -87,9 +87,9 @@ private SessionStore() {
         mSessions = new ArrayList<>();
     }
 
-    public static void prefOverrides(Context context, Bundle aExtras) {
+    public static void prefOverrides(Context context) {
         // FIXME: Once GeckoView has a prefs API
-        SessionUtils.vrPrefsWorkAround(context, aExtras);
+        SessionUtils.vrPrefsWorkAround(context);
     }
 
     public void initialize(Context context) {

app/src/common/shared/org/mozilla/vrbrowser/browser/engine/SessionUtils.java

@@ -25,7 +25,11 @@ public static boolean isLocalizedContent(@Nullable String url) {
         return url != null && (url.startsWith("about:") || url.startsWith("data:"));
     }
 
-    public static void vrPrefsWorkAround(Context aContext, Bundle aExtras) {
+    public static void vrPrefsWorkAround(Context aContext) {
+        if (EngineProvider.INSTANCE.isRuntimeCreated()) {
+            throw new IllegalStateException("vrPrefsWorkAround must be called before creating the runtime");
+        }
+
         File path = GeckoProfile.initFromArgs(aContext, null).getDir();
         String prefFileName = path.getAbsolutePath() + File.separator + "user.js";
         Log.i(LOGTAG, "Creating file: " + prefFileName);
@@ -52,18 +56,6 @@ public static void vrPrefsWorkAround(Context aContext, Bundle aExtras) {
             } else {
                 out.write("user_pref(\"webgl.msaa-force\", false);\n".getBytes());
             }
-            if (BuildConfig.DEBUG) {
-                int processCount = SettingsStore.getInstance(aContext).isMultiE10s() ? 3 : 1;
-                out.write(("user_pref(\"dom.ipc.processCount\", " + processCount + ");\n").getBytes());
-                addOptionalPref(out, "dom.vr.require-gesture", aExtras);
-                addOptionalPref(out, "privacy.reduceTimerPrecision", aExtras);
-                if (aExtras != null && aExtras.getBoolean("media.autoplay.enabled", false)) {
-                    // Enable playing audios without gesture (used for gfx automated testing)
-                    out.write("user_pref(\"media.autoplay.enabled.user-gestures-needed\", false);\n".getBytes());
-                    out.write("user_pref(\"media.autoplay.enabled.ask-permission\", false);\n".getBytes());
-                    out.write("user_pref(\"media.autoplay.default\", 0);\n".getBytes());
-                }
-            }
         } catch (FileNotFoundException e) {
             Log.e(LOGTAG, "Unable to create file: '" + prefFileName + "' got exception: " + e.toString());
         } catch (IOException e) {