Fix autozoom disable (#3360)

Author: bluemarvin

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

@@ -38,6 +38,8 @@ object EngineProvider {
             builder.screenSizeOverride(SettingsStore.getInstance(context).maxWindowWidth,
                     SettingsStore.getInstance(context).maxWindowHeight)
             builder.useMultiprocess(true)
+            builder.inputAutoZoomEnabled(false)
+            builder.doubleTapZoomingEnabled(false)
 
             if (SettingsStore.getInstance(context).transparentBorderWidth > 0) {
                 builder.useMaxScreenDepth(true)

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

@@ -36,15 +36,11 @@ public static void vrPrefsWorkAround(Context aContext, Bundle aExtras) {
             out.write("user_pref(\"webgl.enable-surface-texture\", true);\n".getBytes());
             // Enable MultiView draft extension
             out.write("user_pref(\"webgl.enable-draft-extensions\", true);\n".getBytes());
-            out.write("user_pref(\"apz.allow_double_tap_zooming\", false);\n".getBytes());
             out.write("user_pref(\"dom.webcomponents.customelements.enabled\", true);\n".getBytes());
             out.write("user_pref(\"javascript.options.ion\", true);\n".getBytes());
             out.write("user_pref(\"media.webspeech.synth.enabled\", false);\n".getBytes());
-            // Prevent autozoom when giving a form field focus.
-            out.write("user_pref(\"formhelper.autozoom\", false);\n".getBytes());
             // Disable WebRender until it works with FxR
             out.write("user_pref(\"gfx.webrender.force-disabled\", true);\n".getBytes());
-            out.write("user_pref(\"signon.rememberSignons\", false);\n".getBytes());
             // Disable web extension process until it is able to restart.
             out.write("user_pref(\"extensions.webextensions.remote\", false);\n".getBytes());
             int msaa = SettingsStore.getInstance(aContext).getMSAALevel();