Add "View Text" in webview menu item.
Implement GetPageText in wxWebViewChromium3.
Don't use HTML lexer for view page text.
Merge pull request #10 from hokein/impl_get_page_text

Implement GetPageText in wxWebViewChromium3
Enable wxWebviewChromium to CEF3's newest release version: 3.1650.1562
Merge pull request #12 from hokein/rebase_to_newest_cef

Enable wxWebviewChromium to CEF3's newest release version: 3.1650.1562
Implement Print() API in wxWebViewChromium3.

Since [1], wxWebViewChromium3 supports for print API in CEF 3.1650.1562.

[1]: https://code.google.com/p/chromiumembedded/wiki/ReleaseNotes