Let multiple EnhancedBookmarkModel share same java cache

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 012222c1c4f1169688da4f64d1e250f8d8f14ef2..2f5107ca9270f57da78d91db77f324219aab5e50 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
@@ -51,21 +51,16 @@ public class EnhancedBookmarksModel {
     /**
      * Initialize enhanced bookmark model for last used non-incognito profile with a java-side image
      * cache that has the given size.
-     * @param salientImageCacheSize Maximum cache size in bytes.
      */
-    public EnhancedBookmarksModel(int salientImageCacheSize) {
+    public EnhancedBookmarksModel() {
         Profile originalProfile = Profile.getLastUsedProfile().getOriginalProfile();
         mBookmarksBridge = new BookmarksBridge(originalProfile);
-        mEnhancedBookmarksBridge = new EnhancedBookmarksBridge(originalProfile,
-                salientImageCacheSize);
+        mEnhancedBookmarksBridge = new EnhancedBookmarksBridge(originalProfile);
     }
 
-    /**
-     * Initialize enhanced bookmark model with no cache for salient images. This constructor uses
-     * the last non-incognito profile.
-     */
-    public EnhancedBookmarksModel() {
-        this(0);
+    // TODO(ianwen): remove this constructor.
+    public EnhancedBookmarksModel(int cacheSize) {
+        this();
     }
 
     /**