Add tests to EnhancedBookmarksModel

chrome/android/java/src/org/chromium/chrome/browser/enhanced_bookmarks/EnhancedBookmarksModel.java

Index: chrome/android/java/src/org/chromium/chrome/browser/enhanced_bookmarks/EnhancedBookmarksModel.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/enhanced_bookmarks/EnhancedBookmarksModel.java b/chrome/android/java/src/org/chromium/chrome/browser/enhanced_bookmarks/EnhancedBookmarksModel.java
index 19580cd3a0eae52f0d810874500495919c5f0ed4..f78d942c63b70b02e209b9df9f1b79b6913ff307 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/enhanced_bookmarks/EnhancedBookmarksModel.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/enhanced_bookmarks/EnhancedBookmarksModel.java
@@ -5,6 +5,7 @@
 package org.chromium.chrome.browser.enhanced_bookmarks;
 
 import org.chromium.base.ObserverList;
+import org.chromium.base.VisibleForTesting;
 import org.chromium.chrome.browser.BookmarksBridge;
 import org.chromium.chrome.browser.BookmarksBridge.BookmarkItem;
 import org.chromium.chrome.browser.BookmarksBridge.BookmarkModelObserver;
@@ -66,6 +67,12 @@ public class EnhancedBookmarksModel {
         this(0);
     }
 
+    @VisibleForTesting
+    EnhancedBookmarksModel(Profile profile) {
+        mBookmarksBridge = new BookmarksBridge(profile);
+        mEnhancedBookmarksBridge = new EnhancedBookmarksBridge(profile);
+    }
+
     /**
      * Clean up all the bridges. This must be called after done using this class.
      */
@@ -276,7 +283,8 @@ public class EnhancedBookmarksModel {
     }
 
     /**
-     * @see EnhancedBookmarksBridge#moveBookmark(BookmarkId, BookmarkId)
+     * Calls {@link EnhancedBookmarksBridge#moveBookmark(BookmarkId, BookmarkId)} in a reversed
+     * order of the list, in order to let the last item appear at the top.
      */
     public void moveBookmarks(List<BookmarkId> bookmarkIds, BookmarkId newParentId) {
         for (int i = bookmarkIds.size() - 1; i >= 0; i--) {
@@ -395,4 +403,12 @@ public class EnhancedBookmarksModel {
     public void removeSearchObserver(SearchServiceObserver observer) {
         mEnhancedBookmarksBridge.removeSearchObserver(observer);
     }
+
+    /**
+     * @see BookmarksBridge#loadEmptyPartnerBookmarkShimForTesting()
+     */
+    @VisibleForTesting
+    public void loadEmptyPartnerBookmarkShimForTesting() {
+        mBookmarksBridge.loadEmptyPartnerBookmarkShimForTesting();
+    }
 }