Plumb redirect info out of net, through content, and into child processes.

components/navigation_interception/intercept_navigation_resource_throttle.cc

Index: components/navigation_interception/intercept_navigation_resource_throttle.cc
diff --git a/components/navigation_interception/intercept_navigation_resource_throttle.cc b/components/navigation_interception/intercept_navigation_resource_throttle.cc
index f8f094e51a2513d2e099cd12de80b4e36381d12b..8729d2ceeb9d86aef105ba26779071276d2fa358 100644
--- a/components/navigation_interception/intercept_navigation_resource_throttle.cc
+++ b/components/navigation_interception/intercept_navigation_resource_throttle.cc
@@ -92,6 +92,8 @@ std::string InterceptNavigationResourceThrottle::GetMethodAfterRedirect() {
   net::HttpResponseHeaders* headers = request_->response_headers();
   if (!headers)
     return request_->method();
+  // TODO(davidben): Plumb net::RedirectInfo through content::ResourceThrottle
+  // and unexpose net::URLRequest::ComputeMethodForRedirect.
   return net::URLRequest::ComputeMethodForRedirect(
              request_->method(), headers->response_code());
 }