Bug 1505897 - Initialize GeckoSystemStateListener in child process r=agi

Differential Revision: https://phabricator.services.mozilla.com/D11517

--HG--
extra : moz-landing-system : lando

mobile/android/geckoview/src/main/java/org/mozilla/gecko/GeckoSystemStateListener.java

@@ -11,6 +11,7 @@ import android.database.ContentObserver;
 import android.hardware.input.InputManager;
 import android.net.Uri;
 import android.os.Handler;
+import android.os.Looper;
 import android.provider.Settings;
 import android.util.Log;
 import android.view.InputDevice;
@@ -48,7 +49,7 @@ public class GeckoSystemStateListener
         sApplicationContext = context;
         ContentResolver contentResolver = sApplicationContext.getContentResolver();
         Uri animationSetting = Settings.System.getUriFor(Settings.Global.ANIMATOR_DURATION_SCALE);
-        mContentObserver = new ContentObserver(new Handler()) {
+        mContentObserver = new ContentObserver(new Handler(Looper.getMainLooper())) {
             @Override
             public void onChange(boolean selfChange) {
                 onDeviceChanged();

mobile/android/geckoview/src/main/java/org/mozilla/gecko/GeckoThread.java

@@ -282,6 +282,8 @@ public class GeckoThread extends Thread {
             res.updateConfiguration(config, null);
         }
 
+        GeckoSystemStateListener.getInstance().initialize(context);
+
         final String resourcePath = context.getPackageResourcePath();
 
         try {

mobile/android/geckoview/src/main/java/org/mozilla/geckoview/GeckoRuntime.java

@@ -232,8 +232,6 @@ public final class GeckoRuntime implements Parcelable {
 
         // Initialize the system ClipboardManager by accessing it on the main thread.
         GeckoAppShell.getApplicationContext().getSystemService(Context.CLIPBOARD_SERVICE);
-
-        GeckoSystemStateListener.getInstance().initialize(context);
         return true;
     }
 

widget/android/nsAppShell.cpp

@@ -412,6 +412,7 @@ nsAppShell::nsAppShell()
         if (jni::IsAvailable()) {
             GeckoThreadSupport::Init();
             GeckoAppShellSupport::Init();
+            mozilla::GeckoSystemStateListener::Init();
             mozilla::widget::Telemetry::Init();
 
             // Set the corresponding state in GeckoThread.