Let mini_installer pass any arbitrary command line flags to setup.exe. This...

Let mini_installer pass any arbitrary command line flags to setup.exe. This will let us run setup.exe in verbose logging mode without mucking around in the registry to keep setup.exe around after mini_installer finishes.

Also replace mini_installer black box icon with installer icon of setup.exe.

Review URL: http://codereview.chromium.org/2992

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@3104 0039d316-1c4b-4281-b951-d872f2087c98