DevToolsClientHost is discarded
Add DevToolsManagerDelegateA
Fix compilation warnings due to API changes
Upgrade libchromiumcontent to 39.0.2171.65
Fix compilation warning on Windows
Upgrade libchromiumcontent
Remove DownloadManagerDelegate

Having a partial implemented DownloadManagerDelegate will cause crashes under
certain places.
Merge pull request #84 from brightray/chrome39

Upgrade to Chrome39