DO NOT SUBMIT: Testing frame crash+renavigate that results in painting trouble.

content/browser/site_per_process_browsertest.cc

 // Copyright (c) 2012 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 "content/browser/site_per_process_browsertest.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 8694 matching lines @@
   FrameTreeNode* child = root->child_at(0);
 
   // Set up a postMessage handler in the main frame for later use.
   EXPECT_TRUE(ExecuteScript(
       root->current_frame_host(),
       "window.addEventListener('message',"
       "                        function(e) { document.title = e.data; });"));
 
   // Crash the subframe process.
   RenderProcessHost* child_process = child->current_frame_host()->GetProcess();
+  LOG(ERROR) << "; child_process->GetHandle() = " << child_process->GetHandle();
+
+  {
+    LOG(ERROR) << "Sleeping 10 seconds";
+    scoped_refptr<MessageLoopRunner> runner(new MessageLoopRunner());
+    base::SequencedTaskRunnerHandle::Get()->PostDelayedTask(
+        FROM_HERE, runner->QuitClosure(), base::TimeDelta::FromSeconds(10));
+    runner->Run();
+  }
+
   RenderProcessHostWatcher crash_observer(
       child_process, RenderProcessHostWatcher::WATCH_FOR_PROCESS_EXIT);
   child_process->Shutdown(0, false);
   crash_observer.Wait();
   EXPECT_FALSE(child->current_frame_host()->IsRenderFrameLive());
 
+  {
+    LOG(ERROR) << "Sleeping 10 seconds";
+    scoped_refptr<MessageLoopRunner> runner(new MessageLoopRunner());
+    base::SequencedTaskRunnerHandle::Get()->PostDelayedTask(
+        FROM_HERE, runner->QuitClosure(), base::TimeDelta::FromSeconds(10));
+    runner->Run();
+  }
+
   // When the subframe dies, its RenderWidgetHostView should be cleared and
   // reset in the CrossProcessFrameConnector.
   EXPECT_FALSE(child->current_frame_host()->GetView());
   RenderFrameProxyHost* proxy_to_parent =
       child->render_manager()->GetProxyToParent();
   EXPECT_FALSE(
       proxy_to_parent->cross_process_frame_connector()->get_view_for_testing());
 
   // Navigate the subframe to the same site it was on before crashing.  This
   // should reuse the subframe's current RenderFrameHost and reinitialize the
   // RenderFrame in a new process.
-  NavigateFrameToURL(child,
-                     embedded_test_server()->GetURL("b.com", "/title1.html"));
+  TestFrameNavigationObserver child_navigation_observer(child);
+  EXPECT_TRUE(
+      ExecuteScript(root->current_frame_host(),
+                    "var f = document.getElementsByTagName('iframe')[0];\n"
+                    "f.src = f.src\n"));
+  child_navigation_observer.Wait();
   EXPECT_TRUE(child->current_frame_host()->IsRenderFrameLive());
 
   // The RenderWidgetHostView for the child should be recreated and set to be
   // used in the CrossProcessFrameConnector.  Without this, the frame won't be
   // rendered properly.
   EXPECT_TRUE(child->current_frame_host()->GetView());
   EXPECT_EQ(
       child->current_frame_host()->GetView(),
       proxy_to_parent->cross_process_frame_connector()->get_view_for_testing());
 
   // Send a postMessage from the child to its parent.  This verifies that the
   // parent's proxy in the child's SiteInstance was also restored.
   base::string16 expected_title(base::UTF8ToUTF16("I am alive!"));
   TitleWatcher title_watcher(shell()->web_contents(), expected_title);
   EXPECT_TRUE(ExecuteScript(child->current_frame_host(),
                             "parent.postMessage('I am alive!', '*');"));
   EXPECT_EQ(expected_title, title_watcher.WaitAndGetTitle());
+
+  LOG(ERROR) << "Starting message loop for interactive UI...";
+  (new content::MessageLoopRunner)->Run();
 }
 
 // Test that session history length and offset are replicated to all renderer
 // processes in a FrameTree.  This allows each renderer to see correct values
 // for history.length, and to check the offset validity properly for
 // navigations initiated via history.go(). See https:/crbug.com/501116.
 IN_PROC_BROWSER_TEST_F(SitePerProcessBrowserTest, SessionHistoryReplication) {
   GURL main_url(embedded_test_server()->GetURL(
       "a.com", "/cross_site_iframe_factory.html?a(a,a)"));
   EXPECT_TRUE(NavigateToURL(shell(), main_url));
@@ skipping 1232 matching lines @@
     names.insert(root->children[0]->frame_entry->frame_unique_name());
   }
 
   // More than one entry in the set means that the subframe frame navigation
   // entries didn't have a consistent unique name. This will break history
   // navigations =(
   EXPECT_THAT(names, SizeIs(1)) << "Mismatched names for subframe!";
 }
 
 }  // namespace content