android: assert runningOnLauncherThread

content/public/android/java/src/org/chromium/content/browser/LauncherThread.java

Index: content/public/android/java/src/org/chromium/content/browser/LauncherThread.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/LauncherThread.java b/content/public/android/java/src/org/chromium/content/browser/LauncherThread.java
index 7dc1b96db279bca0f73ddfc6ce8fcd8d3ece151f..89b4984fc72b2991beaae550e99db57399303fd8 100644
--- a/content/public/android/java/src/org/chromium/content/browser/LauncherThread.java
+++ b/content/public/android/java/src/org/chromium/content/browser/LauncherThread.java
@@ -5,13 +5,15 @@
 package org.chromium.content.browser;
 
 import android.os.Handler;
+import android.os.Looper;
 
 import org.chromium.base.JavaHandlerThread;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
 
+/** This is BrowserThread::PROCESS_LAUNCHER. It is available before native library is loaded. */
 @JNINamespace("content::android")
-final class LauncherThread {
+public final class LauncherThread {
     private static final JavaHandlerThread sThread =
             new JavaHandlerThread("Chrome_ProcessLauncherThread");
     private static final Handler sHandler;
@@ -20,10 +22,14 @@ final class LauncherThread {
         sHandler = new Handler(sThread.getLooper());
     }
 
-    static void post(Runnable r) {
+    public static void post(Runnable r) {
         sHandler.post(r);
     }
 
+    public static boolean runningOnLauncherThread() {
+        return sHandler.getLooper() == Looper.myLooper();
+    }
+
     @CalledByNative
     private static JavaHandlerThread getHandlerThread() {
         return sThread;