allow file: scheme in the browser

When creating a bookmark, allow the book's URL to start with
javascript: . Use URI to isolate the scheme
to take care of case and special characters.

fixes http://b/issue?id=2059889
diff --git a/src/com/android/browser/BrowserSettings.java b/src/com/android/browser/BrowserSettings.java
index b7ff0d3..91b08a3 100644
--- a/src/com/android/browser/BrowserSettings.java
+++ b/src/com/android/browser/BrowserSettings.java
@@ -1,3 +1,4 @@
+
 /*
  * Copyright (C) 2007 The Android Open Source Project
  *
@@ -207,8 +208,6 @@
             s.setNeedInitialFocus(false);
             // Browser supports multiple windows
             s.setSupportMultipleWindows(true);
-            // Turn off file access
-            s.setAllowFileAccess(false);
 
             // HTML5 API flags
             s.setAppCacheEnabled(b.appCacheEnabled);