[Enhanced Bookmark]Rewrite initialization logic

chrome/android/java/src/org/chromium/chrome/browser/enhancedbookmarks/EnhancedBookmarkFilter.java

Index: chrome/android/java/src/org/chromium/chrome/browser/enhancedbookmarks/EnhancedBookmarkFilter.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/enhancedbookmarks/EnhancedBookmarkFilter.java b/chrome/android/java/src/org/chromium/chrome/browser/enhancedbookmarks/EnhancedBookmarkFilter.java
index e9282988098181adc4dc4439e16a36ec3d97cbc9..861afb2eba5a44c25d485845a7d528a15a23edcf 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/enhancedbookmarks/EnhancedBookmarkFilter.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/enhancedbookmarks/EnhancedBookmarkFilter.java
@@ -8,5 +8,16 @@ package org.chromium.chrome.browser.enhancedbookmarks;
  * Possible filters for the enhanced bookmarks.
  */
 enum EnhancedBookmarkFilter {
-    OFFLINE_PAGES
+    OFFLINE_PAGES("OFFLINE_PAGES");

[newt (away), 2015/12/02 16:21:12]

Is it too late to change the value to something more elegant, such as,
"offline"?

[Ian Wen, 2015/12/03 02:33:23]

I wouldn't change it without the offline page folks taking a look here. I wonder
how large the offline page's user base is.

+fgorski can you confirm?

Anyway if we want to change it we can always change the string after this patch.

+
+    /**
+     * An {@link EnhancedBookmarkFilter} can be persisted in URLs. To ensure the
+     * URLs are consistent, values should remain the same even after the enums
+     * are renamed.
+     */
+    public final String value;
+
+    private EnhancedBookmarkFilter(String value) {
+        this.value = value;
+    }
 }