Navigation transitions: Place transition page in same process as destination page.

content/browser/transition_browsertest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/bind.h"
 #include "content/browser/loader/cross_site_resource_handler.h"
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
 #include "content/browser/loader/resource_request_info_impl.h"
 #include "content/browser/transition_request_manager.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/browser/web_contents_observer.h"
+#include "content/public/test/browser_test_utils.h"
 #include "content/public/test/content_browser_test.h"
 #include "content/public/test/content_browser_test_utils.h"
 #include "content/public/test/test_utils.h"
 #include "content/shell/browser/shell.h"
 #include "content/shell/browser/shell_resource_dispatcher_host_delegate.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "net/url_request/url_request.h"
 
 namespace content {
 
@@ skipping 87 matching lines @@
       new TransitionBrowserTestObserver(shell()->web_contents()));
 
   ResourceDispatcherHost::Get()->SetDelegate(observer.get());
   observer->set_pending_transition_request(true);
 
   NavigateToURL(shell(), embedded_test_server()->GetURL("/title1.html"));
 
   ASSERT_TRUE(observer->did_defer_response());
 }
 
+// This tests that the renderer is reused between the outgoing and transition.
+IN_PROC_BROWSER_TEST_F(TransitionBrowserTest,
+                       TransitionNavigationSharesRenderer) {
+  ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
+
+  NavigateToURL(shell(), embedded_test_server()->GetURL("/title1.html"));
+
+  GURL transition_url =
+      TransitionRequestManager::GetInstance()->CreateTransitionURL();
+
+  int outgoing_process_id =
+      shell()->web_contents()->GetRenderProcessHost()->GetID();
+
+  TransitionRequestManager::GetInstance()->AddPendingTransitionProcessID(
+      transition_url, outgoing_process_id);
+
+  Shell* shell2 =
+      Shell::CreateNewWindow(shell()->web_contents()->GetBrowserContext(),
+                             GURL(),
+                             NULL,
+                             MSG_ROUTING_NONE,
+                             gfx::Size());
+
+  NavigationController::LoadURLParams params(
+      embedded_test_server()->GetURL("/title2.html"));
+  params.transition_type = PageTransitionFromInt(
+      PAGE_TRANSITION_TYPED | PAGE_TRANSITION_FROM_ADDRESS_BAR);
+  params.virtual_url_for_transition = transition_url;
+  shell2->web_contents()->GetController().LoadURLWithParams(params);
+  shell2->web_contents()->Focus();
+
+  WaitForLoadStop(shell2->web_contents());
+
+  ASSERT_EQ(outgoing_process_id,
+            shell2->web_contents()->GetRenderProcessHost()->GetID());
+}
+
 }  // namespace content