ChromeFrame currently overrides the request context for intercepting network requests and cookie requests to route them
over the automation channel. This adds needless complexity and race conditions between registering a request context for
a renderer process as the first one wins. 

We no longer override the request context in ChromeFrame. For cookie requests we look up the registered render view map
and on finding one we route the request over the automation channel.

Fixes bug http://code.google.com/p/chromium/issues/detail?id=51103

Bug=51103

Review URL: http://codereview.chromium.org/3036038

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@54867 0039d316-1c4b-4281-b951-d872f2087c98
27 files changed