[HTMLViewer] Explicitly set WebSettings#setAllowFileAccess to true am: d1349e757f am: 6a57196481

Change-Id: I67b785543f54fff33624d30e1b73dcd6a54b7942
diff --git a/src/com/android/htmlviewer/HTMLViewerActivity.java b/src/com/android/htmlviewer/HTMLViewerActivity.java
index 85a16aa..1aa1f68 100644
--- a/src/com/android/htmlviewer/HTMLViewerActivity.java
+++ b/src/com/android/htmlviewer/HTMLViewerActivity.java
@@ -71,6 +71,7 @@
         s.setSavePassword(false);
         s.setSaveFormData(false);
         s.setBlockNetworkLoads(true);
+        s.setAllowFileAccess(true);
 
         // Javascript is purposely disabled, so that nothing can be
         // automatically run.