Run the later parts of startup as UI thread tasks

content/public/android/java/src/org/chromium/content/app/ContentMain.java

Index: content/public/android/java/src/org/chromium/content/app/ContentMain.java
diff --git a/content/public/android/java/src/org/chromium/content/app/ContentMain.java b/content/public/android/java/src/org/chromium/content/app/ContentMain.java
index 09ba783a1557a776eaf07d1caf6dfb59eb3c17cd..6f2f610d4e84d2ac38e6f11d90af632983e5fd51 100644
--- a/content/public/android/java/src/org/chromium/content/app/ContentMain.java
+++ b/content/public/android/java/src/org/chromium/content/app/ContentMain.java
@@ -7,6 +7,7 @@ package org.chromium.content.app;
 import android.content.Context;
 
 import org.chromium.base.JNINamespace;
+import org.chromium.content.browser.StartupObserver;
 
 /**
  * This class is used to initialize all types of process. It corresponds to
@@ -29,11 +30,17 @@ public class ContentMain {
 
     /**
      * Start the ContentMainRunner in native side.
+     *
+     * @param mustBeImmediate true if initialization must be completed without creating additional
+     *                        UI tasks
+     * @param observer startup observer provides callback when startup complete. May be null if
+     *                 no callback required.
+     * @result the result of the startup attempt. OK if <= 0. Values > 0 are error codes.
      **/
-    public static int start() {
-        return nativeStart();
+    public static int start(boolean mustBeImmediate, StartupObserver observer) {
+        return nativeStart(mustBeImmediate, observer);
     }
 
     private static native void nativeInitApplicationContext(Context context);
-    private static native int nativeStart();
+    private static native int nativeStart(boolean mustBeImmediate, StartupObserver observer);
 };