GitLab

Added a second configuration that can support two http proxies and one https proxy. In the process, added a new DataReductionProxyParams object to encapsulate static configuration details and made DataReductionSettingsAndroid a BrowserKeyedContextService.

BUG=370039

Review URL: https://codereview.chromium.org/286013002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@273810 0039d316-1c4b-4281-b951-d872f2087c98