Do not suppress referrers for '<a ... rel="noopener">'.

content/browser/frame_host/render_frame_host_manager_browsertest.cc

Index: content/browser/frame_host/render_frame_host_manager_browsertest.cc
diff --git a/content/browser/frame_host/render_frame_host_manager_browsertest.cc b/content/browser/frame_host/render_frame_host_manager_browsertest.cc
index 35098266539c3399db4e03d8eed7a05d6a26cc69..296a6e515ce0b0242bdbb0f6af7359f249907e51 100644
--- a/content/browser/frame_host/render_frame_host_manager_browsertest.cc
+++ b/content/browser/frame_host/render_frame_host_manager_browsertest.cc
@@ -312,7 +312,7 @@ IN_PROC_BROWSER_TEST_F(RenderFrameHostManagerTest,
 
 // Same as above, but for 'noopener'
 IN_PROC_BROWSER_TEST_F(RenderFrameHostManagerTest,
-                       SwapProcessWithRelNopenerAndTargetBlank) {
+                       SwapProcessWithRelNoopenerAndTargetBlank) {
   StartEmbeddedServer();
 
   NavigateToPageWithLinks(shell());
@@ -343,6 +343,16 @@ IN_PROC_BROWSER_TEST_F(RenderFrameHostManagerTest,
       &success));
   EXPECT_TRUE(success);
 
+  // Check that the referrer is set correctly.
+  std::string expected_referrer =
+      embedded_test_server()->GetURL("/click-noreferrer-links.html").spec();
+  success = false;
+  EXPECT_TRUE(ExecuteScriptAndExtractBool(
+      new_shell, "window.domAutomationController.send(document.referrer == '" +
+                     expected_referrer + "');",
+      &success));
+  EXPECT_TRUE(success);
+
   // Wait for the cross-site transition in the new tab to finish.
   WaitForLoadStop(new_shell->web_contents());
   WebContentsImpl* web_contents =
@@ -400,6 +410,16 @@ IN_PROC_BROWSER_TEST_F(RenderFrameHostManagerTest,
       &success));
   EXPECT_TRUE(success);
 
+  // Check that the referrer is set correctly.
+  std::string expected_referrer =
+      embedded_test_server()->GetURL("/click-noreferrer-links.html").spec();
+  success = false;
+  EXPECT_TRUE(ExecuteScriptAndExtractBool(
+      new_shell, "window.domAutomationController.send(document.referrer == '" +
+                     expected_referrer + "');",
+      &success));
+  EXPECT_TRUE(success);
+
   // Should have a new SiteInstance.
   scoped_refptr<SiteInstance> noopener_blank_site_instance(
       new_shell->web_contents()->GetSiteInstance());