[Enhanced Bookmark]Rewrite initialization logic

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

Index: chrome/android/java/src/org/chromium/chrome/browser/enhancedbookmarks/EnhancedBookmarkPage.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/enhancedbookmarks/EnhancedBookmarkPage.java b/chrome/android/java/src/org/chromium/chrome/browser/enhancedbookmarks/EnhancedBookmarkPage.java
index f30da93fc4e34acc8d7bcaeccf4ad60b75a4ec10..889be8c99717ffaa05c89b18d886ec53a9172b27 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/enhancedbookmarks/EnhancedBookmarkPage.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/enhancedbookmarks/EnhancedBookmarkPage.java
@@ -29,6 +29,7 @@ public class EnhancedBookmarkPage implements NativePage, EnhancedBookmarkStateCh
     private final int mBackgroundColor;
     private final int mThemeColor;
     private EnhancedBookmarkManager mManager;
+    private String mCurrentUrl;
 
     /**
      * Create a new instance of an enhanced bookmark page.
@@ -97,6 +98,7 @@ public class EnhancedBookmarkPage implements NativePage, EnhancedBookmarkStateCh
 
     @Override
     public void updateForUrl(String url) {
+        mCurrentUrl = url;
         mManager.updateForUrl(url);
     }
 
@@ -108,6 +110,7 @@ public class EnhancedBookmarkPage implements NativePage, EnhancedBookmarkStateCh
 
     @Override
     public void onBookmarkUIStateChange(String url) {
+        if (url.equals(mCurrentUrl)) return;

[Kibeom Kim (inactive), 2015/11/19 19:18:19]

Q: 1. how does this interact with refresh? 2. What problem does it solve?

[Ian Wen, 2015/12/01 09:17:14]

It eliminates the loop that EB changes its url and it tells chrome tab. Chrome
tab will try to load EB again to that url.

Refresh will do nothing here (WAI?)

[newt (away), 2015/12/01 19:53:19]

Actually, refresh will cause the page to be recreated. This happens for all
native pages. See "candidateForReuse" in Tab.maybeShowNativePage():
https://code.google.com/p/chromium/codesearch#chromium/src/chrome/android/jav...

         mTab.loadUrl(new LoadUrlParams(url));
     }
 }