So after you nagged me for sometime I , stupidly, gave up and installed the new version of CCleaner, and guess what, you sneaked in your own browser without even asking me, and on top of that hijacked my default browser!!!!
Shame on you!
When you went through the installation process, the first screen would have looked like this:
... and when you clicked on "Install" you would have received an offer screen that looked like this:
Which button did you click on this offer screen?
If you clicked "Accept" unintentionally you can uninstall the browser from inside CCleaner itself (Tools > Uninstall) eg: