Record UMA for snackbars shown for all purposes

chrome/android/java/src/org/chromium/chrome/browser/bookmarks/BookmarkUtils.java

 // Copyright 2015 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.bookmarks;
 
 import android.app.Activity;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
@@ skipping 79 matching lines @@
                     bookmarkModel.getBookmarkById(bookmarkId).getParentId());
             SnackbarController snackbarController =
                     createSnackbarControllerForEditButton(activity, bookmarkId);
             if (getLastUsedParent(activity) == null) {
                 snackbar = Snackbar.make(activity.getString(R.string.bookmark_page_saved),
                         snackbarController, Snackbar.TYPE_ACTION);
             } else {
                 snackbar = Snackbar.make(folderName, snackbarController, Snackbar.TYPE_ACTION)
                         .setTemplateText(activity.getString(R.string.bookmark_page_saved_folder));
             }
-            snackbar.setSingleLine(false).setAction(
-                    activity.getString(R.string.bookmark_item_edit), null);
+            snackbar.setSingleLine(false).setAction(activity.getString(R.string.bookmark_item_edit),
+                    null).setPurpose(Snackbar.UMA_BOOKMARK_ADDED);
         }
         snackbarManager.showSnackbar(snackbar);
 
         bookmarkModel.destroy();
         return bookmarkId;
     }
 
     /**
      * Adds a bookmark with the given title and url to the last used parent folder. Provides
      * no visual feedback that a bookmark has been added.
@@ skipping 169 matching lines @@
 
     /**
      * @return Whether "all bookmarks" section is enabled.
      */
     static boolean isAllBookmarksViewEnabled() {
         String flag = CommandLine.getInstance()
                 .getSwitchValue(ChromeSwitches.ENABLE_ALL_BOOKMARKS_VIEW, "false");
         return flag.equals("true");
     }
 }