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

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

Index: chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBar.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBar.java b/chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBar.java
index e27ff5bf3b2e07c0de8954ebd0bfcc3831f94118..bfc93bea5d66d23c5a30ec3e5b3f4634e817961e 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBar.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBar.java
@@ -144,7 +144,7 @@ public abstract class InfoBar implements InfoBarView {
      * @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()) {