Introduces snackbar enum, & other snackbar classes on android for translate

chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBar.java

 // Copyright 2013 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.chrome.browser.infobar;
 
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.view.View;
 import android.widget.TextView;
@@ skipping 126 matching lines @@
 
     @Override
     public boolean isLegalDisclosure() {
         return false;
     }
 
     /**
      * @return whether the infobar actually needed closing.
      */
     @CalledByNative
-    private boolean closeInfoBar() {
+    protected boolean closeInfoBar() {

[gone, 2017/04/26 17:19:51]

I'm really wary of exposing this method.  It allows anyone to close the infobar
incorrectly.  Can you:

1) Add a protected function called closeInfoBarInternal() that you override.
2) Make closeInfoBar() call it.
3) Mark closeInfoBar() as final

[ramyasharma, 2017/04/27 08:01:42]

Thank Dan. But I dont need this anymore, I dont have to call close infobar
explicitly.

         if (!mIsDismissed) {
             mIsDismissed = true;
             if (!mContainer.hasBeenDestroyed()) {
                 // If the container was destroyed, it's already been emptied of all its infobars.
                 mContainer.removeInfoBar(this);
             }
             return true;
         }
         return false;
     }
@@ skipping 39 matching lines @@
     }
 
     @Override
     public void createContent(InfoBarLayout layout) {
     }
 
     private native void nativeOnLinkClicked(long nativeInfoBarAndroid);
     private native void nativeOnButtonClicked(long nativeInfoBarAndroid, int action);
     private native void nativeOnCloseButtonClicked(long nativeInfoBarAndroid);
 }