Allows deferral of a URLRequest just before talking to the network, at
DoCreateStream time in the HttpNetworkTransaction. This hook allows
for experimentation with the ResourceScheduler so that it can defer
after first checking the cache, gathering the cookies, and starting
the WebRequest but before going to the network.

BUG=328741

Review URL: https://codereview.chromium.org/122453002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243568 0039d316-1c4b-4281-b951-d872f2087c98
Stop pulling DEPS used only by Chrome Frame.

BUG=316496

Review URL: https://codereview.chromium.org/126433002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243569 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 243568
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243570 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 243570