Updates for WebSocket and URLRequest tests for cookie changes.

We're becoming picker about 1st party vs. 3rd party distinction, requiring
explicit marking, so adjust tests.

This doesn't help some of the metrics tests in URLRequest

Bug: 1016512

Change-Id: Ib07d460840d7c7796810b57b0ee95d8676b7bb95
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1872638
Commit-Queue: Maksim Orlovich <morlovich@chromium.org>
Reviewed-by: Lily Chen <chlily@chromium.org>
Cr-Commit-Position: refs/heads/master@{#708204}

net/url_request/url_request_test_util.cc

@@ -164,6 +164,16 @@ void TestURLRequestContext::Init() {
   }
 }
 
+std::unique_ptr<URLRequest> TestURLRequestContext::CreateFirstPartyRequest(
+    const GURL& url,
+    RequestPriority priority,
+    URLRequest::Delegate* delegate,
+    NetworkTrafficAnnotationTag traffic_annotation) const {
+  auto req = CreateRequest(url, priority, delegate, traffic_annotation);
+  req->set_site_for_cookies(url);
+  return req;
+}
+
 TestURLRequestContextGetter::TestURLRequestContextGetter(
     const scoped_refptr<base::SingleThreadTaskRunner>& network_task_runner)
     : network_task_runner_(network_task_runner) {

net/url_request/url_request_test_util.h

@@ -88,6 +88,14 @@ class TestURLRequestContext : public URLRequestContext {
     create_default_http_user_agent_settings_ = value;
   }
 
+  // Like CreateRequest, but also updates |site_for_cookies| to give the request
+  // a 1st-party context.
+  std::unique_ptr<URLRequest> CreateFirstPartyRequest(
+      const GURL& url,
+      RequestPriority priority,
+      URLRequest::Delegate* delegate,
+      NetworkTrafficAnnotationTag traffic_annotation) const;
+
  private:
   bool initialized_ = false;