Ignore in-page navigations on the initial blank page.

content/browser/frame_host/navigation_controller_impl_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 "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/browser/frame_host/frame_navigation_entry.h"
 #include "content/browser/frame_host/frame_tree.h"
 #include "content/browser/frame_host/navigation_controller_impl.h"
@@ skipping 291 matching lines @@
       "/navigation_controller/simple_page_2.html");
   script = "location.assign('" + frame_url.spec() + "')";
   EXPECT_TRUE(content::ExecuteScript(
       new_root->child_at(0)->current_frame_host(), script));
 
   // Success is not crashing, and not navigating.
   EXPECT_EQ(nullptr,
             new_shell->web_contents()->GetController().GetLastCommittedEntry());
 }
 
+// Similar to SubframeOnEmptyPage, but verifies that in-page navigations on the
+// initial about:blank document also do not create NavigationEntries.  This was
+// a problem when cloning subframe FrameNavigationEntries in --site-per-process.
+// See https://crbug.com/522193.
+IN_PROC_BROWSER_TEST_F(NavigationControllerBrowserTest, InPageOnEmptyPage) {
+  NavigateToURL(shell(), GURL(url::kAboutBlankURL));
+  EXPECT_TRUE(WaitForLoadStop(shell()->web_contents()));
+
+  FrameTreeNode* root =
+      static_cast<WebContentsImpl*>(shell()->web_contents())->
+          GetFrameTree()->root();
+
+  // Pop open a new window.
+  ShellAddedObserver new_shell_observer;
+  std::string script = "window.open()";
+  EXPECT_TRUE(content::ExecuteScript(root->current_frame_host(), script));
+  Shell* new_shell = new_shell_observer.GetShell();
+  ASSERT_NE(new_shell->web_contents(), shell()->web_contents());
+  FrameTreeNode* new_root =
+      static_cast<WebContentsImpl*>(new_shell->web_contents())->
+          GetFrameTree()->root();
+
+  // Make a new iframe in it.
+  NoNavigationsObserver observer(new_shell->web_contents());
+  script = "var iframe = document.createElement('iframe');"
+           "iframe.src = 'data:text/html,<p>some page</p>';"
+           "document.body.appendChild(iframe);";
+  EXPECT_TRUE(content::ExecuteScript(new_root->current_frame_host(), script));
+  // The success check is of the last-committed entry, and there is none.
+  WaitForLoadStopWithoutSuccessCheck(new_shell->web_contents());
+
+  ASSERT_EQ(1U, new_root->child_count());
+  ASSERT_NE(nullptr, new_root->child_at(0));
+
+  // Navigate in-page in the main frame, which should be ignored.
+  script = "location.href='#foo';";
+  EXPECT_TRUE(content::ExecuteScript(new_root->current_frame_host(), script));
+  EXPECT_TRUE(WaitForLoadStop(shell()->web_contents()));
+  EXPECT_EQ(nullptr,
+            new_shell->web_contents()->GetController().GetLastCommittedEntry());
+
+  // Make a new nested iframe.  Shouldn't crash.
+  script = "var iframe = document.createElement('iframe');"
+           "iframe.src = 'data:text/html,<p>nested page</p>';"
+           "document.body.appendChild(iframe);";
+  EXPECT_TRUE(content::ExecuteScript(
+                  new_root->child_at(0)->current_frame_host(), script));
+  // The success check is of the last-committed entry, and there is none.
+  WaitForLoadStopWithoutSuccessCheck(new_shell->web_contents());
+}
+
 namespace {
 
 class FrameNavigateParamsCapturer : public WebContentsObserver {
  public:
   // Observes navigation for the specified |node|.
   explicit FrameNavigateParamsCapturer(FrameTreeNode* node)
       : WebContentsObserver(
             node->current_frame_host()->delegate()->GetAsWebContents()),
         frame_tree_node_id_(node->frame_tree_node_id()),
         navigations_remaining_(1),
@@ skipping 2012 matching lines @@
     EXPECT_EQ(original_url, capturer.all_params()[1].url);
     EXPECT_EQ(original_url, shell()->web_contents()->GetLastCommittedURL());
   }
 
   // Make sure the renderer is still alive.
   EXPECT_TRUE(
       ExecuteScript(shell()->web_contents(), "console.log('Success');"));
 }
 
 }  // namespace content