Revert of Destroy incognito profile from close all incognito notification.

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

Index: content/public/android/java/src/org/chromium/content/browser/BrowserStartupController.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/BrowserStartupController.java b/content/public/android/java/src/org/chromium/content/browser/BrowserStartupController.java
index af14cc514a7698b96b0db01806417d268e50c74a..f24d6b85549df91a6692da377afaf1bfb0f98367 100644
--- a/content/public/android/java/src/org/chromium/content/browser/BrowserStartupController.java
+++ b/content/public/android/java/src/org/chromium/content/browser/BrowserStartupController.java
@@ -233,14 +233,6 @@
         return ContentMain.start();
     }
 
-    /**
-     * @return Whether the browser process completed successfully.
-     */
-    public boolean isStartupSuccessfullyCompleted() {
-        ThreadUtils.assertOnUiThread();
-        return mStartupDone && mStartupSuccess;
-    }
-
     public void addStartupCompletedObserver(StartupCallback callback) {
         ThreadUtils.assertOnUiThread();
         if (mStartupDone) {