Data URL fixes - bookmarks, save, and wallpaper

 Bug 5383517
 Images kept in data URLs can now be selected and this fixes the
 Save and Set Wallpaper options. It also removes the bookmarking
 capability.

Change-Id: I461bdcb4c950f6fcd8db8b38f4c599212106b027
diff --git a/src/com/android/browser/PhoneUi.java b/src/com/android/browser/PhoneUi.java
index 0e2710d..ddb4e0e 100644
--- a/src/com/android/browser/PhoneUi.java
+++ b/src/com/android/browser/PhoneUi.java
@@ -196,7 +196,9 @@
     public void updateMenuState(Tab tab, Menu menu) {
         MenuItem bm = menu.findItem(R.id.bookmarks_menu_id);
         if (bm != null) {
-            bm.setVisible(!showingNavScreen());
+            String url = tab.getUrl();
+            boolean isDataUrl = DataUri.isDataUri(url);
+            bm.setVisible(!showingNavScreen() && !isDataUrl);
         }
         MenuItem nt = menu.findItem(R.id.new_tab_menu_id);
         if (nt != null) {