Use OriginalUrl instead of Url for history

 Bug: 3500263

Change-Id: I8a0b795dcac28e016e8511aa856aa3e9a45d6a13
diff --git a/src/com/android/browser/Tab.java b/src/com/android/browser/Tab.java
index c4897f2..47cefbc 100644
--- a/src/com/android/browser/Tab.java
+++ b/src/com/android/browser/Tab.java
@@ -1583,6 +1583,13 @@
         return UrlUtils.filteredUrl(mCurrentState.mUrl);
     }
 
+    String getOriginalUrl() {
+        if (mMainView == null) {
+            return "";
+        }
+        return UrlUtils.filteredUrl(mMainView.getOriginalUrl());
+    }
+
     /**
      * Get the title of this tab.
      */