Update HTMLViewer to use utf-8 text encoding.

By default, WebView will use Latin-1 encoding.

Patch courtesy of Takeshi Aimi.

Bug: 13214875
Change-Id: I16d3bf91904b617fd25c98d68771330c01055f18
diff --git a/src/com/android/htmlviewer/HTMLViewerActivity.java b/src/com/android/htmlviewer/HTMLViewerActivity.java
index e51e7a1..d4f4f73 100644
--- a/src/com/android/htmlviewer/HTMLViewerActivity.java
+++ b/src/com/android/htmlviewer/HTMLViewerActivity.java
@@ -92,6 +92,8 @@
         // automatically run.
         s.setJavaScriptEnabled(false);
 
+        s.setDefaultTextEncodingName("utf-8");
+
         // Restore a webview if we are meant to restore
         if (savedInstanceState != null) {
             mWebView.restoreState(savedInstanceState);