GitLab

Win8 default browser registration code is extracted into a fairly minimal .rgs script with a helper app that is then invoked by the ash unittests.

A full ICommandExecuteImpl implementation turns out to not be needed as the ash tests activate the registered default browser directly by AppUserModelId which avoids the need for
ICommandExecuteImpl and the other stuff in the production delegate_execute.exe.

BUG=154081
TEST=ash_unittests, eventually.

Review URL: https://chromiumcodereview.appspot.com/12096064

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@182258 0039d316-1c4b-4281-b951-d872f2087c98