base

Fixing bugs in HelloWebView tutorial on developer.android.com.

- Top-level LinearLayout needs to fill_parent, rather than wrap_content,
  otherwise the child WebView has 0 width
- setWebViewClient() needs to construct a new HelloWebViewClient, not
  WebViewClientDemo (which doens't exist).

Change-Id: Ie8b14e0cbf2b498573e965ccfc27b858dedabfa0