Temporarily avoid process swaps for renderer navigations away from an app.

chrome/browser/extensions/app_process_apitest.cc

Index: chrome/browser/extensions/app_process_apitest.cc
diff --git a/chrome/browser/extensions/app_process_apitest.cc b/chrome/browser/extensions/app_process_apitest.cc
index af623f108a435155c94d28078179227e9615b73e..3cf2c836fb8c155afccdd6332f90467089ffad70 100644
--- a/chrome/browser/extensions/app_process_apitest.cc
+++ b/chrome/browser/extensions/app_process_apitest.cc
@@ -111,8 +111,12 @@ IN_PROC_BROWSER_TEST_F(AppApiTest, MAYBE_AppProcess) {
                    base_url.Resolve("path1/empty.html"), true);
   WindowOpenHelper(browser(), host,
                    base_url.Resolve("path2/empty.html"), true);
+  // TODO(creis): This should open in a new process (i.e., false for the last
+  // argument), but we temporarily avoid swapping processes away from an app
+  // until we're able to restore window.opener if the page later returns to an
+  // in-app URL.  See crbug.com/65953.
   WindowOpenHelper(browser(), host,
-                   base_url.Resolve("path3/empty.html"), false);
+                   base_url.Resolve("path3/empty.html"), true);
 
   // Now let's have these pages navigate, into or out of the extension web
   // extent. They should switch processes.
@@ -120,8 +124,23 @@ IN_PROC_BROWSER_TEST_F(AppApiTest, MAYBE_AppProcess) {
   const GURL& non_app_url(base_url.Resolve("path3/empty.html"));
   NavigateTabHelper(browser()->GetTabContentsAt(2), non_app_url);
   NavigateTabHelper(browser()->GetTabContentsAt(3), app_url);
-  EXPECT_NE(host->process(),
+  // TODO(creis): This should swap out of the app's process (i.e., EXPECT_NE),
+  // but we temporarily avoid swapping away from an app in case it needs to
+  // communicate with window.opener later.  See crbug.com/65953.
+  EXPECT_EQ(host->process(),
             browser()->GetTabContentsAt(2)->render_view_host()->process());
   EXPECT_EQ(host->process(),
             browser()->GetTabContentsAt(3)->render_view_host()->process());
+
+  // If one of the popup tabs navigates back to the app, window.opener should
+  // be valid.
+  NavigateTabHelper(browser()->GetTabContentsAt(6), app_url);
+  EXPECT_EQ(host->process(),
+            browser()->GetTabContentsAt(6)->render_view_host()->process());
+  bool windowOpenerValid = false;
+  ASSERT_TRUE(ui_test_utils::ExecuteJavaScriptAndExtractBool(
+      browser()->GetTabContentsAt(6)->render_view_host(), L"",
+      L"window.domAutomationController.send(window.opener != null)",
+      &windowOpenerValid));
+  ASSERT_TRUE(windowOpenerValid);
 }