Write HierarchyViewer's data in UTF-8.
Write HierarchyViewer's data in UTF-8.

This change fixes issues with HierarchyViewer running on phones with a non en locale.
The biggest problem occurred with spanish locales.

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base