Run the later parts of startup as UI thread tasks

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

Index: content/public/android/java/src/org/chromium/content/browser/StartupObserver.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/StartupObserver.java b/content/public/android/java/src/org/chromium/content/browser/StartupObserver.java
new file mode 100644
index 0000000000000000000000000000000000000000..c140308b8788bf226f26e28167b6ba844aaec7b0
--- /dev/null
+++ b/content/public/android/java/src/org/chromium/content/browser/StartupObserver.java
@@ -0,0 +1,20 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.content.browser;
+
+import org.chromium.base.CalledByNative;
+
+/**
+ * Abstract class for observing the completion of the C++ startup tasks. If you
+ * want an observer create a concrete object derived from this and pass it to
+ * ContentMain.Start() (and hence to content::start() on the C++ side).
+ */
+public abstract class StartupObserver {
+    /**
+     * Called by the C++ side when all the C++ startup tasks have run.
+     */
+    @CalledByNative
+    public abstract void allStartupTasksRan();
+}