Remove deprecated constructors from enhanced bookmark model

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 32d60d1e381aa8657eca12c551509165055a414f..d18ee5012fc9c01959f1a56b25352efd5739998d 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
@@ -59,13 +59,8 @@ public class EnhancedBookmarksModel {
         mEnhancedBookmarksBridge = new EnhancedBookmarksBridge(originalProfile);
     }
 
-    // TODO(ianwen): remove this constructor.
-    public EnhancedBookmarksModel(int cacheSize) {
-        this();
-    }
-
     @VisibleForTesting
-    EnhancedBookmarksModel(Profile profile) {
+    public EnhancedBookmarksModel(Profile profile) {
         mBookmarksBridge = new BookmarksBridge(profile);
         mEnhancedBookmarksBridge = new EnhancedBookmarksBridge(profile);
     }